Cap 

Someone who does not go through with plans with a specific individual or group frequently.

Bill- "Sorry I couldn't make it to your party, I had to go grocery shopping"
Kevin- "You're such a fucking cap Bill!"

"So you're coming to the game right? You're not gonna cap are you?"

Cap by AlphaSwag September 29, 2011

Cap 

1. Any drug that comes in a capsule.
2. To cross-out or spray-over a graffiti tag, Either with a thick line or your own graffiti tag. Is a sign of insult and disrespect to the tag and tagger that you spray-over.

1. "Let's go score some caps."
2. "I'm going to come back here tonight and cap that shit piece."

Cap by Diego July 29, 2003

Cap 

To reach a maximum; max out.

The amount of money you’ll get caps at $1,000.

Cap by Unknown_576 March 27, 2019

cap 

verb: to shoot a person with a handgun

If I ever become a personal-injury lawyer, then cap me in the head.

cap by atemperman April 20, 2003

cap 

when a male fully clothed rubs his cock (tip of his penis, or cap) against any part of another person male or female as if by accident or brushing his crotch against them so that they can feel the penis. this is a tradition in a town called riverhead, and mostly preformed by a man named joe who works in said town.

lori, i was sitting in my seat on a plane and this fuck putting his bag in the overhead just capped me !

joe you fuck, you just capped me ! !

cap by Jack de wack May 8, 2008

cap 

a lie

bobby: yo i just got the kill last night

peter: nah that’s cap

orrrrrr

peter: stop cappin

cap by kneegah June 1, 2019

Cap 

Cap means lies but more slangish. Usually used in Among Us but very popular anywhere!
i mean
who tf would say "N0 LieS"

"Hey, I don't like him ok?"
"Stop it. You like him. No cap"

Cap by daedreaminyoonie February 1, 2021