A horse walks into a bar and orders a pint

The bartender says, ” you’re in here a lot. Do you think you might be an alcoholic? ” The horse says, “I don’t think I am, ” and promptly vanishes from existence.See, this was a joke about Descartes’ famous philosophical statement, ” I think, therefore I am.” I could have mentioned that at the beginning, but that would have been putting Descartes before the horse.