Shooting off - the act of masturbation. Originally meaning to leave or go somewhere (e.g. men may go shooting off to outer space..., I've got to shoot off now, will talk later though), but has come to mean wanking.
Synonyms for shooting off
On this page, you will find 30 slang terms related to shooting off. Some of the top words include: Four Knuckle Shuffle, beating your meat, bust a cap in yo ass, Butt, Warning Shot, and 25 more.