First Principle Puns

A horse walks into a bar and orders ten beers which he quickly downs. The bartender says, "Wow – don’t you think you’re drinking too much?" The horse ponders for a minute and then responds, “I don’t think I am.” And poof, he disappears.

At this point philosophy students reading this joke start to snicker, being familiar with philosopher Rene Decartes' first principle: "I think, therefore I am."

The rest of us might have wished for some mention of this principle right at the start. But that would have been putting Descartes before the horse.