It is one thing to have the piss taken out of you by the other kids, it's quite another to have the piss taken by a teacher. Pontius Pilate was a nickname bestowed on one John Pennells by Mr. Young, the Head of Metalwork. Pennells earned this moniker by washing his hands every 5 minutes during Metalwork lessons. Young would further torment him by sending him on pointless errands such as "Go and fetch me a left-handed file" and John, being such a dick, would wash his hands and go look for one around the (quite large) Crafts block while the rest of the class laughed mockingly at him. If he felt himself get a little grubby during his search, he would pause to wash his hands before continuing his faux quest.
And of course when he realised that he was on a wild goose chase, he would stare darkly at all in the class, mutter under his breath.....and then wash his hands.
Fifteen years later and with the help of hindsight we recognise this behaviour as the start of Compulsive Obsessive Disorder that marked the start of John's descent into Clinical Depression and mild Schizophrenia, aren't you happy that our Teachers are such caring, perceptive professionals?