drag (one's) ass
1. To deliberately work or perform slowly, sluggishly, or reluctantly; to idle rather than perform one's work or duties. Stop dragging your ass on that assignment, I need it finished by 3 o'clock. I'm so bored with work that I find myself dragging ass every day in the office.
2. To leave or depart from a place. You'd better drag your ass outta here before I get even more upset. It's the cops, we'd better drag ass!
drag ass
rude slang To move quickly. Come on, let's go! We need to drag ass if we're going to get there on time.