ESTABLISHMENT CLAUS: That’s what I’d do, if I were a bratty Christian and/or libertarian student who wanted to take the piss–set up some kind of Santa display in whatever passed for the local public square, and label him Establishment Claus. I’m anti-civic Deism, and anti-Santa Claus as generic symbol of the Winter Shopping Festival rather than actual Christian saint, so it would be fun to see the fireworks that would ensue. You could make Est. Claus more or less Christian depending on the reaction you wanted to provoke!

More on the actual establishment clause in a moment.