Skip to main content
Urban Dictionary Merch
Your favorite words on things you can wear, drink from, read, or give to a friend.
The Urban Dictionary Store sells gifts you’ll have to explain.

Going Cosby 

When someone places roofies in women's drinks.
"Did you hear what happened to those 2 chicks. Yeah some dude was Going Cosby on their drinks!"
Going Cosby by will bitten December 3, 2016

Cosby Cock

When you can't quite remember something but it's on the tip of your tongue.
Person 1-"I can't remember ,.......but it's on the tip of my tongue"
Person 2 "that's the Cosby Cock"
Cosby Cock by Mcnowski February 15, 2017
The act of putting a date rape drug into some ones Jello shot.
"Never take drinks from strangers, or else you may get Cosby'd.
Cosby'd by Crambo11 January 17, 2015

slow cosby 

In Canada, we call a slow cosby, love.
slow cosby by CanadianCharlotte December 31, 2015

Bill Cosby 

A drink with a roofie in it. Prepare to be raped.
Bill Cosby slipped her a bill cosby. When she passed out, her went to town.
Bill Cosby by Eggplant0 November 25, 2014

Bill Cosby in a can 

Bill Cosby in a can refers to starting fluid.
Guy one: my lawnmower won’t start.

Guy two: sounds like you need some Bill Cosby in a can
More from Urban Dictionary

square grouper

Nickname given to bales of marijuana thrown overboard or out of airplanes. Origin is reportedly from members of the US Coast Guard in the area of Southern Florida.
"Base we've got some square groupers floating outside of Miami harbor."
square grouper by slipsheet November 6, 2004
Word of the Day on October 7, 2026
A girl who does ballet and only talks about ballet. Her schedule is filled with dance classes which does not allow her to do any other activity.
"Hey, do you know that girl Sally?"

"Yeah, she's kind of annoying. All she ever talks about it ballet."

"Wow, what a Bunhead."

"Hey Sally, you want to hang out this weekend?"
"I can't, I have dance."
"You're such a Bunhead."

"Yeah... I know."
Bunhead by Jen00 October 24, 2014
Word of the Day on October 6, 2026

trucker's tan 

A sunburn or suntan focused on the left arm. It is caused by the left side of the body being the only half that gets exposed to sunlight while driving. Presumably, it would be located on the right side of the body in countries where they drive on the left side of the road.
I had a trucker's tan after driving for 10 straight hours on a sunny day.
Word of the Day on October 5, 2026
The phenomenon where adults salivate at children's toys
Every time I walk into the toy aisle, I catch myself kidulting over the latest action figures and LEGO sets!
kidulting by Emotional Cruiser October 12, 2025
Word of the Day on October 4, 2026
British slang for a scientist or technical expert, esp . when the speaker is not certain of the expert’s specific field of study. Not necessarily derogatory, but typically used by persons without a technical background. In the US, the equivalent would be “egghead”, “squint”, or “geek.”

Origin of the word is unknown. Started sometime in World War 2. Given the typical evolution of British slang, could easily have started because what these experts did was confusing or “baffling” to the common person.
According to the boffins downstairs, the murderer used a serrated blade.
Boffin by Agnon February 11, 2023
Word of the Day on October 3, 2026

Pee Calculus

When you have to pee in a movie but don’t want to miss anything, and must do the following mental equation: will the amount I have to pee cause enough discomfort to diminish my attention capacity for the remainder of the movie to an extent which is greater than the amount of the movie I would miss by making a mad dash to the restroom.
I saw Satantango last night, wonderful film but by the 5th hour I had to start doing pee calculus.
Pee Calculus by anorlondo October 1, 2026
Word of the Day on October 2, 2026
Load more