A bump is a small amount of powdered drug, typically scooped on the tip of a key, a tiny spoon, or the end of a fingernail and snorted in one quick inhale. It’s considerably smaller than a full “line” and is generally used for a mild, short-lasting effect or to maintain a high without taking a larger dose all at once. The substances most commonly taken this way are cocaine, methamphetamine, and ketamine.
How Much Powder Is in a Bump
There’s no standardized measurement. A bump is roughly what fits on the flat part of a house key or a small snuff spoon, which typically works out to somewhere between 25 and 100 milligrams of powder depending on the substance, how tightly it’s packed, and the size of the tool. For context, a line of cocaine laid out on a surface usually contains several times that amount. The appeal of a bump is its convenience and discretion: no mirror, no razor blade, no flat surface required. A person can dip a key into a bag and inhale in seconds.
How Bumps Affect the Body
When powder is snorted, it absorbs through the blood-vessel-rich lining inside the nose. Effects from nasal use tend to peak within about 5 to 15 minutes, which is roughly on par with smoking or injection for speed of onset, though the intensity is typically lower with a small nasal dose.
What happens next depends heavily on the substance. A bump of cocaine produces a short rush that fades in 30 to 50 minutes, which is why people often re-dose frequently. A bump of methamphetamine hits in a similar timeframe but lasts far longer. In clinical measurements, the cardiovascular effects of a single nasal dose of methamphetamine persisted for more than four hours, and plasma levels didn’t peak until four hours after administration, even though the subjective high arrived within 15 minutes. That mismatch between “feeling it” and actual blood concentration is one reason people misjudge how much they’ve taken and redose too soon.
Nasal Damage From Repeated Use
Because bumps are small, people sometimes assume they’re gentler on the body. The nose tells a different story. Cocaine in particular causes intense constriction of blood vessels in the nasal lining, and over time this starves the tissue of oxygen. Repeated exposure leads to chronic inflammation, erosion of the nasal septum (the wall between your nostrils), and in severe cases, extensive destruction of cartilage. This damage is cumulative: many small doses can be just as harmful as fewer large ones because the tissue never gets a chance to recover between exposures.
Methamphetamine and other snorted powders cause their own irritation. The powder itself is caustic, and the cutting agents mixed into street drugs (things like baking soda, lidocaine, or various fillers) add further chemical insult to already-irritated tissue. Frequent snorting of any substance commonly leads to nosebleeds, crusting, loss of smell, and chronic sinus infections.
Contamination and Overdose Risk
One of the most serious risks with any amount of street powder is not knowing what’s actually in it. A drug-checking study in New York City that analyzed over 1,600 samples between 2021 and 2023 found that about 85 to 95 percent of samples sold as opioids contained fentanyl. Notably, the same study found little evidence of fentanyl showing up in samples sold as cocaine or methamphetamine, which challenges the widespread belief that all street powder is routinely contaminated. Still, supply chains vary by region, and a single batch can differ from the next.
Fentanyl is active in microgram quantities, meaning an amount invisible to the naked eye can be enough to cause a fatal overdose. For someone who doesn’t regularly use opioids, even a tiny contaminated bump could be dangerous. Fentanyl test strips, which are inexpensive and widely available through harm reduction programs and online, can detect the presence of fentanyl in a dissolved sample before use. They aren’t perfect, since they can’t measure concentration or catch every synthetic opioid analogue, but a positive result is a meaningful warning.
Tools and How They Add Risk
The most common tools for taking bumps are keys, small metal spoons (sometimes called bullet spoons), the cap of a pen, or a long fingernail. For snorting, people use short straws, rolled paper, or small tubes. Each of these introduces its own issues. Shared straws or spoons can transmit blood-borne infections, because snorting frequently causes tiny cuts and bleeding inside the nose. Hepatitis C in particular spreads efficiently through shared snorting equipment, even when no visible blood is present.
Using a clean, smooth straw rather than a rough or torn surface reduces tissue damage. Harm reduction guidelines recommend using your own unused paper straw each time, rinsing the nose with saline afterward to help clear residue and reduce irritation, and never sharing equipment.
Bump vs. Line vs. Booty Bump
In drug slang, a bump sits at the small end of the dosing spectrum. A line is a longer strip of powder arranged on a flat surface and inhaled through a tube, delivering a noticeably larger dose. A “booty bump” is a different method entirely: it involves dissolving the drug in a small amount of water and administering it rectally with a needleless syringe. This method, most commonly used with methamphetamine or cocaine, avoids nasal damage but carries its own risks, including irritation and tearing of rectal tissue, which increases vulnerability to sexually transmitted infections.
People sometimes alternate between methods to give damaged tissue a break, but this doesn’t eliminate the cumulative harm. It spreads it across different parts of the body instead.