clean act up

clean (one's) act up

To improve one's behavior. After I got in yet another fight at school, the headmaster told me that I had to clean my act up or else I'd be expelled.
See also: act, clean, up

clean one's act up

to reform one's conduct; to improve one's performance. We were told to clean our act up or move out. I cleaned up my act, but not in time. I got kicked out.
See also: act, clean, up