1. Please, don't lie around like a 'couch potato', get up and do something productive! All he ever does is watch TV, and he's got the prize of a real couch potato. 2.He'll hit the roof when he finds out that the trip has been cancelled. 3. The Mayor went to the roof when hearing that! The party wasn't a success as there were too many cooks that spoiled the broth! (=too many organisers)