cap

Usually a plastic bottle cap (possibly from a water or soda bottle) filled to the top with GHB.

We're goin to Crobar?....ight i'll go but ya hook me up with 2 caps to start and more later.

FOUR CAPS IN A ROW?! you're gonna G the fuck out son....

Who's got caps? Do YOU have caps?

by K-TROOPER August 27, 2006

cap

buying drugs

havent capped in a while

by dude love November 6, 2003

cap

to shoot someone in the knee cap.

If the bitch comes around I'm gonin' cap him.

by hunter July 19, 2004

Cap

Stands for 'Copy and paste'
Used on MSN and other instant messenger services when you want the person you are talking to to copy and paste a section of their conversation with another person into your conversation.

Person X Says:
"This guy is being really annoying. He wont stop complaining!"
Person Y Says:
"Cap it to me"

by AshDav January 16, 2009

Cap

The top part of a "magic mushroom" or shroom which is most often consumed for pycoactive effects.

Dude i found 12 caps in that field!

by James Hickey March 30, 2004

Cap

to capture something, usually video game-wise, like an objective a flag a bomb.

I'm capping the point.

I've capped the flag.

by Hurummph November 11, 2017

Cap

To lie or make a false accusation

Man stop capping

by MaxNine December 13, 2017