work (one's) ass off(redirected from Work My Ass Off)
Also found in: Acronyms.
work (one's) ass off
rude slang To work really hard (on or at something). I know you thought it was just a silly New Year's resolution, but I've been working my ass off at the gym! Sally and Jim work their asses off when we hold our user conference—I don't know what I'd do without them!