bust-ups bust a gut bust up bust your butt/chops/hump bust anything up increase and bust bust your ass (carrying out a thing/to carry out a thing) bust your butt/chops/hump (doing anything/to do a little something) bust your chops/butt/hump (carrying out one thing/to do some thing) bust your hump/butt/chops (undertaking one thing/to accomplish some