The act of coitus between two men, where the "fucker" puts a sedative tablet in the head of his penis, to insert into the "fuckees" anus, where it will become active. Once inserted, the "fuckee" will now have a tail, made of cock... a, cocktail and "cosby" cocktail, due to the sedative.
"Ah yeah, my rings stull hurtin from when Steve gave me that cosby cocktail last night".
"Ah yeah Dave, how did you like that cosby cocktail"
"Ah yeah Dave, how did you like that cosby cocktail"
by Bill Nye The Cosby Guy October 30, 2021

by Suki the First February 28, 2020

by floppy gobbler July 18, 2024

by LongJohnJohn October 20, 2020

The act of slipping a Quaalude or a roofie into a woman's drink making her pass out so that you can have sex with her.
Hey man!! Don't cosby that girl's drink.
Jeff is douche bag he cosby'd that girl drink at the party last night.
Jeff is douche bag he cosby'd that girl drink at the party last night.
by cosbybillpuddingpop July 23, 2015

by Oneleggedwonder July 9, 2018

Man, my Girl jessica almost got Pill Cosby'd last night luckilly I took notice and she dumped her drink.
by mikemonty December 4, 2023
