Pop a cap

To Shoot Someone, Usually In Their Bottom.

Word Nee-Gro, You Better Back Off Before I POP A CAP In Your Ass.

by dj_jammer506 February 06, 2005

pocket rocket

when a male jacks-off by putting his hand in his pocket and rubbing his dick

Dude, on the subway last night there was no one on it and this totally hot babe walks by and I just had to to a pocket rocket!!!

by dj_jammer506 December 27, 2003