A drug used to sedate women, or to make them incoherent to prevent unwanted sexual acts.
1)You gave that poor girl a Cosby didn't you?
1A) Yup, and she was out like a light.
by UnknownIgnorance December 2, 2014
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Creeping up on a female in a groopey manner
Alex quit kissing on Courtney and stop grabbing her tits your totally cosbying
by 1212332 January 31, 2015
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A multi colored sweater.

Stemming from the days of the Cosby show, in which the main character, Heathcliff Huxtable, played by Bill Cosby, constantly wears bright, multi colored sweaters.
Tom came into the office wearing a colorful sweater.

Mohan exclaimed "Damn Tom, nice Cosby!"
by Chips August 11, 2004
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A shit, usually of full girth. Tendency to bring pain upon exit.
1. "I hate dropping the cosbys at public restrooms"
2. "I drove Bill Cosby and the kids to the museum"
3. "The cosbys are pushing at the gate"
by G-Man March 5, 2003
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A sexual senario, its background pertaining to the fact that the african american comedian Bill Cosby used to advertise jello. "A Cosby" is where a girl sucks a man's dick, with jello in her mouth as well.
by BloodMatrix February 21, 2005
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The act of slipping something into an unsuspecting woman's drink and then proceed to fuck her silly.
Dat bitch Felicia just got cosby'd
I hate her so much that I'm going to Cosby her at the party tonight.
by Djjglitz December 5, 2014
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Used online in the Blizzard game "Starcraft" when a nuke is used to kill mass units.
{after nuking 30 zerg units} "Holy shit, that was a cosby!"
by Murdock November 25, 2004
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