1. rude slang To start doing something, especially after a period of unproductivity or laziness. Grandma will be here in 30 minutes, so get off your ass and move.
Definition of work your ass off in the Idioms Dictionary. work your ass off phrase. What does work your ass off expression mean? Make it yours today!.
I have been working my ass off! Get a my ass off mug for your cousin Helena. 2 MY DAD'S GONE CRAZY: "I'm outta the closet, I've been lyin' my ass off".