Teasing is one of the most socially complex behaviors humans engage in, sitting on a continuum that stretches from affectionate play all the way to targeted cruelty. A systematic review of qualitative research on peer teasing found that young people themselves define teasing along this spectrum, with substantial overlap between playful and harmful forms: teasing meant to be lighthearted can still cause real hurt.1SpringerLink. What are the Features of Playful and Harmful Teasing and When Does it Cross the Line? A Systematic Review and Meta-synthesis of Qualitative Research on Peer Teasing That ambiguity is what makes teasing so interesting and so tricky to navigate, and it turns out we have been grappling with it for far longer than our species has existed.
An Older Behavior Than Language Itself
Playful teasing is not a uniquely human invention. A 2024 study documented spontaneous playful teasing across all four great ape species: orangutans, gorillas, chimpanzees, and bonobos. The apes engaged in intentionally provocative behavior, looked back to check the other’s reaction, and repeated or escalated their antics when they got a response. Because the behavior appeared across all great ape lineages, the researchers concluded that the cognitive prerequisites for this kind of joking evolved at least 13 million years ago, well before language or anything resembling a verbal punchline.2Proceedings of the Royal Society B: Biological Sciences. Spontaneous playful teasing in four great ape species
A related review identified three specific teasing styles shared by great apes and human infants: offering something and then pulling it away, deliberately not complying with a request in a playful manner, and disrupting someone else’s activity on purpose.3PubMed Central. Just kidding: the evolutionary roots of playful teasing If you have ever dangled a toy in front of a toddler and snatched it back, or watched a chimp poke a companion and then scramble away, you have witnessed essentially the same social move playing out across millions of years of evolutionary history.
When Teasing Shows Up in Human Development
Babies start teasing earlier than most people expect. Research on infant humor shows that from around nine months of age, infants begin stepping outside the expected flow of an interaction and deliberately disrupting it. They offer objects and pull them back, do the opposite of what a parent clearly wants, and repeat actions they know will get a laugh. These are not random behaviors; infants actively look for opportunities to provoke a reaction, functioning as tiny social experimenters testing the boundaries of shared expectations.4Current Biology. Teasing and clowning in infancy
The fact that teasing emerges before speech tells us something important: the behavior does not depend on words. It depends on understanding that other people have expectations and that those expectations can be playfully violated. This early form of teasing in infants mirrors the structure seen in apes, reinforcing the idea that teasing is built on deep social-cognitive abilities, not linguistic cleverness.
The Blurry Line Between Playful and Harmful
The question most people have about teasing is not what it is but where the line sits between harmless fun and genuine harm. The honest answer is that the line is genuinely blurry, and pretending otherwise gets people into trouble. The same systematic review that mapped teasing as a continuum found that playful teasing was more common among friends, while harmful teasing tended to focus on appearance and personal characteristics.5SpringerLink. What are the Features of Playful and Harmful Teasing and When Does it Cross the Line? A Systematic Review and Meta-synthesis of Qualitative Research on Peer Teasing But the boundaries are not clean: something intended as playful by the teaser can land as harmful for the target, and the teaser may never know.
Several features distinguish teasing that tends to stay playful from teasing that drifts into damage. Playful teasing typically happens between people who already trust each other, targets topics that are not genuinely sensitive, and is accompanied by cues that signal “I’m joking.” Harmful teasing zeroes in on real insecurities, happens in front of audiences that amplify the sting, and often occurs across power imbalances where the target cannot easily push back. The problem is that these features are not always visible to everyone involved. The teaser may think they are being affectionate while hitting a nerve they did not know existed.
How the Brain Reads Teasing
Your brain does work to distinguish between teasing and genuine threat, and it does so quickly. A neuroimaging study examining how people interpret social interactions from body language found that the right amygdala, a brain region involved in processing threats, responded more strongly to threatening body language than to teasing body language, regardless of what task the participant was performing.6PubMed. Tease or threat? Judging social interactions from bodily expressions In other words, the brain is actively categorizing social encounters on the fly, sorting playful provocations from dangerous ones. But this sorting process is probabilistic, not perfect, and it depends heavily on context, familiarity, and the individual’s history of being teased.
Weight-Related Teasing and Mental Health
If there is one domain where teasing research delivers a clear, consistent warning, it is weight. Being teased about body weight is reliably linked to anxiety, psychological distress, and disordered eating in adolescents, and these associations hold for both boys and girls regardless of their actual weight.7PubMed Central. The relation between weight-based teasing and psychological adjustment in adolescents That last point is worth sitting with: you do not have to be overweight to be psychologically harmed by weight teasing. The teasing itself, not the weight, does the damage.
A large study of adolescents put numbers on the relationship. Among those with overweight or obesity who experienced weight teasing more than once a year, the odds of depressive symptoms were roughly tripled, the odds of loneliness were nearly quadrupled, and the odds of moderate to severe anxiety symptoms were more than five times higher compared to those not teased. The researchers found that weight perception and weight teasing, rather than actual weight, independently influenced mental health outcomes.8PubMed Central. Association between weight, weight perception, weight teasing and mental health among adolescents
The effects are not limited to the adolescent years. A longitudinal study following young adults found that among women, family weight-related teasing predicted increased engagement in unhealthy weight control behaviors in early adulthood, and this pathway was mediated through poorer body image in late adolescence. Peer teasing, by contrast, did not predict the same outcomes for women. For men, the mediated pathways were not significant, though poor body image in late adolescence still predicted unhealthy weight control behaviors later on.9PubMed Central. The longitudinal relationship between family and peer teasing in young adulthood and later unhealthy weight control behaviors: The mediating role of body image This suggests that when it comes to weight, teasing from family members may carry a different and sometimes heavier emotional charge than the same comments from friends.
When Parents Are the Teasers
Parents are not the most common source of teasing in a young person’s life; that distinction usually belongs to peers and siblings. But parental teasing has an outsized impact. A systematic review of research on parental appearance teasing in adolescence found that even though parents teased less frequently than others, the influence was significant and sometimes interacted with sibling-based teasing to compound the effect. Parental teasing about appearance was associated with problem eating behaviors in adolescents.10PubMed Central. Parental appearance teasing in adolescence and associations with eating problems: a systematic review
Research on children specifically found that parental teasing mediated the relationship between body mass index and both depression and self-perceived physical appearance. In other words, having a higher BMI did not directly predict worse self-perception in kids; what mattered was whether they perceived their parents as teasing them about it.11PubMed. The mediating effects of perceived parental teasing on relations of body mass index to depression and self-perception of physical appearance and global self-worth in children Many parents who tease their children about weight believe they are motivating healthy behavior. The evidence points in the opposite direction.
Gender Differences in How Teasing Lands
Boys and girls get teased at similar rates about their appearance, but the downstream consequences differ. A study of appearance teasing found no significant gender difference in the frequency of early teasing experiences. However, those teasing experiences were significantly related to body image problems in adulthood for both genders, while the link to broader mental health outcomes like depression and anxiety was significant in women but not in men.12PubMed Central. Appearance Teasing and Mental Health: Gender Differences and Mediation Effects of Appearance-Based Rejection Sensitivity and Dysmorphic Concerns In women, the pathway from teasing to poor mental health ran through heightened sensitivity to appearance-based rejection and concerns about body image that compounded over time. In men, those mediating links were much weaker.
Separate research on early adolescents found that girls expected greater negative emotional reactions to teasing than boys did, with weight-related teasing producing the largest gender gap in expected distress.13Social Development. A Three‐factor Model of Teasing: The Influence of Friendship, Gender, and Topic on Expected Emotional Reactions to Teasing during Early Adolescence None of this means boys are unaffected. But the research consistently shows that appearance and weight teasing carries a steeper psychological cost for girls and women.
Cultural Variation in How Teasing Feels
Not everyone interprets teasing the same way, and some of that variation maps onto cultural differences. A series of studies comparing Asian Americans and European Americans found that Asian Americans attributed more friendly intent to teasers and reported more positive experiences when they were the target of teasing.14PubMed. Culture and teasing: the relational benefits of reduced desire for positive self-differentiation The researchers framed this through the lens of self-differentiation: in cultural contexts that place less emphasis on standing out as an individual, teasing may be experienced less as a personal attack and more as a social bonding ritual. In cultural contexts that prize individual distinctiveness, the same tease can feel like a challenge to your identity.
This does not mean teasing is universally benign in collectivist cultures or universally harmful in individualist ones. But it underscores that the meaning of a tease is partly constructed by the social norms the teaser and the target bring to the interaction. What registers as warmth in one context can register as disrespect in another, which has real implications for mixed-culture friendships and workplaces.
Workplace Banter and Its Costs
In many workplaces, particularly those with strong team cultures, teasing goes by another name: banter. And banter occupies an uncomfortable gray zone. Research on the UK Fire and Rescue Service described banter as a mode of humorous workplace communication that can reduce tension and consolidate belonging, but also has boundary-setting, boundary-testing, and boundary-crossing capacities.15Gender, Work & Organization. Banter and beyond: The role of humor in addressing gendered organizational tensions and belonging within the UK Fire and Rescue Service The same jokes that make insiders feel closer can make outsiders feel excluded.
A study of police officers made the problem sharper. When a colleague complained about being the target of jokes and tricks, three groups of officers and staff reframed the complaint as mere banter, treating it as a sign of in-group acceptance. But closer analysis suggested that this “banter” functioned to create and maintain an exclusionary masculine culture that people were reluctant to challenge. The researchers drew parallels with sexual harassment and racism, concluding that as part of a toxic organizational culture, banter can represent a form of institutionalized bullying.16The Police Journal: Theory, Practice and Principles. Is banter bullying or a necessary part of the police officer toolkit? The defense “it’s just banter” works precisely because teasing is genuinely ambiguous; it gives the teaser plausible deniability while the target absorbs the cost.
Teasing Moves Online and Loses Its Safety Cues
The ambiguity that makes face-to-face teasing tricky becomes considerably worse online. In person, you can soften a tease with a grin, a nudge, a tone of voice. In a text message or social media comment, those signals are largely absent. A systematic review of how adolescents and young adults navigate online banter found that the potential for misinterpretation and escalation is high, and that perceived bullying is a common outcome when humorous teasing moves into digital spaces.17Current Psychology. The role of digital cues in online banter: a systematic review of adolescents’ and emerging adults’ views, uses and interpretations
Research on adolescents’ own perceptions found a telling dynamic: many teens recognized that online banter could be misread as cyberbullying, yet they also felt like “everyone does it,” creating social pressure to participate even when they were uncomfortable. The absence of nonverbal cues and social context in online communication means that banter that would be clearly playful in person can land very differently on a screen.18Computers in Human Behavior. “I feel like everyone does it”- adolescents’ perceptions and awareness of the association between humour, banter, and cyberbullying Emojis and “lol” are imperfect substitutes for a wink and a smile.
Teasing and Autism
Teasing requires a rapid, real-time reading of social cues, which is exactly where many autistic individuals face challenges. Research comparing the teasing behavior of children with autism to that of neurotypical peers found that the teasing of autistic children was less playful and less provocative, with less focus on social norms. Their parents, too, tended to tease in less playful ways. Scores on theory-of-mind tasks, which measure the ability to understand that others have different thoughts and expectations, accounted for several of these differences.19PubMed. Understanding teasing: lessons from children with autism
Autistic children are also more likely to be on the receiving end. A study comparing children with autism spectrum disorder to their typically developing siblings found that the children with ASD were teased more frequently. Somewhat counterintuitively, the characteristics associated with being teased more included higher cognitive functioning, less severe ASD symptoms, and more time spent in inclusive educational settings.20Focus on Autism and Other Developmental Disabilities. A Multi-Rater Study on Being Teased Among Children/Adolescents With Autism Spectrum Disorder (ASD) and Their Typically Developing Siblings The children who spent the most time around neurotypical peers were the most exposed to teasing, which is a sobering finding for inclusion advocates to sit with. It does not argue against inclusion; it argues for better support within inclusive settings.
The psychological toll can be lasting. A study of individuals with Asperger’s syndrome found that about 45% had at least a mild form of gelotophobia, or fear of being laughed at, compared to just 6% of controls. That is the highest rate of gelotophobia ever documented in any studied group. The fear correlated with how often and how severely the person remembered being teased and mocked in the past.21PubMed. Teasing, ridiculing and the relation to the fear of being laughed at in individuals with Asperger’s syndrome For someone who already struggles to distinguish playful from hostile intent in real time, a history of negative teasing can make all laughter feel threatening.
What Former Teasers and Targets Remember
Teasing leaves different traces depending on which side you were on. Research on college students who reflected on their childhood teasing experiences found that those who reported teasing others more frequently were more likely to accept blame for the incident when telling the story. Participants rated as showing more empathy for the victim also expressed more remorse. On the other side, students who had been frequent targets of childhood teasing were less likely to report forgiving the person who teased them.22Journal of Research in Personality. Reactions to bullying and peer victimization: Narratives, physiological arousal, and personality The asymmetry is stark: teasers can look back and feel bad, and some do. But targets carry the experience differently, with less willingness to let it go. The person who says “I was just kidding” and the person who was hurt by the joke may be living in genuinely different emotional realities, not just in the moment but years later.