Rob: "Yo holmes! Crackhead mike got a real job!"
Holmes: "stop the cap my dude"
Rob: "Nah my G, i ain't cappin. Check his LinkedIN"
Holmes: LinkedIN? da fuq is that?
Something someone says that EVERYONE knows is a BIG ASS LIE. Usually used to try to flex by FIBBING. You can tell cap apart from no-cap by just seeing what the person who said it looks like, or if it's just completely unreasonable.
Person 1: "Hey guys I just landed a bottle flip from the top of the Twin Peaks.
Person 2: "THAT'S CAP BRO!"
Person 3: "STOP THE CAP!"
The Karen: "ALL OF YOU JUST SHUT UP! I'M CALLING THE MANAGER!"
Person 2 and 3: "NAHHHHH FAM THAT'S CAP!"
Person1"dude i just went to surf and found a 1 million dollar shark tooth."
Person2"Thats mad cap its probably a 5 dollar toy that someone bought from the gift shop and left here."