wipe the/that smile, grin, etc. off your/somebody's face(redirected from wipe that grin off your face)
wipe the/that ˈsmile, ˈgrin, etc. off your/somebody’s face(informal)
1 used to tell somebody to stop smiling, etc. because it is annoying or not appropriate: Wipe that smile off your face or I’ll send you out of the classroom.
2 make somebody feel less happy or satisfied with something: The news from the stock market soon wiped the smile off his face.