An ache or pain located in the head caused by reading and writing in continuous caps lock, it happens because when you read caps lock it is like you are shouting over people, that arn't actually there.
There is no cure.
There is no cure.
by cap-ache victim #1 October 23, 2009

Used during messaging for realeasing the "Fucking rage". Mainly used for enlarging the letters to look as though screaming at a person.
by steven frey May 2, 2008

by Ksmoke December 21, 2008

a small, cone-shaped turd, most commonly encountered stuck to the "head" of one's penis during withdrawal from an unclean anus.
"As I pulled my cock from her chocolate starfish in anticipation of shooting my load onto her bare butt-cheeks, I noticed a smelly DUNCE CAP adorning my head. Too late to stop, my load propelled the DUNCE CAP like a stinky poo rocket ship square into the back of her head, knocking her unconscious."
by Old Carndog December 16, 2013

Nigga 1: Hey you want some of dis sheeit?
Nigga 2: Ah, I don wan dat shit.
Nigga 1: I don give a fuck, I don't play that shit, and I'm about to bust a cap motha nigga.
Nigga 2: Ah, I don wan dat shit.
Nigga 1: I don give a fuck, I don't play that shit, and I'm about to bust a cap motha nigga.
by jakrel September 6, 2005

Similar to the teabag, in this instance, the male places his genitals on top of the head of a female partner, (or a friend to be embarrassed). The balls rest on their head as if they were a cap, the penis of course is the Bill of the Ball Cap.
That asshole went out on a date with my sister, I came home and they were watching TV on my couch so i just gave him a ball cap.
by Littlelando17 January 21, 2009

by Dominic Jose Garcia December 31, 2009
