rub one out

Verb

rub one out (third-person singular simple present rubs one out, present participle rubbing one out, simple past and past participle rubbed one out)

1. (intransitive, slang, vulgar) To masturbate.
   • Irish sounded serious when he said, “Oh, yeah, dog, if you get caught rubbing one out in the joint, you're fucked.” I said, “What's rubbing one out mean?” He cackled, and said, “Whackin' off, chokin' your chicken, spankin' the monkey. Come on dog, don't play stupid.”2012, David Wambaugh, The Last Call, page 178

   Synonyms:

   jerk one out, rub one off, rub oneself off, abuse, bash one out, bate, beat it, beat off, crank one out, fap