Little Harry arrived at school wearing a brand new wrist watch. His friend Arnie asked him how he came by it ,Harry replied that he had caught his mum & Dad making love on the Sunday morning and his Dad had given him the watch to keep him quiet . Arnie went home & bided his time until he was sure that his mum & Dad were at it, he burst into the bedroom & his Dad said,what do you want, & Arnie replied I wanna watch & his Dad said ok you can but stand in the corner & don't make a noise.