steptoe face, please
Upon being asked "Steptoe face please", the target had to make a face like Albert Steptoe from Steptoe and Son. The (quite polite) request could come at any time, even when you were in the middle of answering a teacher's question. If the required face was not made, the person making the request was entitled to beat the target up.
written by Do*inic *utto*, approved by Phil