Does anyone know the origin of these phrases? My Dad regularly uses them and I can't seem to find out where they come from. For those of you unfamiliar with these old sayings, to "clean your clock" means to beat you up, thrash you, etc. To "clock you" means to hit you in the face. I'm guessing that "clock" is related to the human face but that's all I know. I've also heard that it's BE slang and/or that it's a phrase developed from sporting events... Any help is appreciated.