The oldest recorded joke in the world has been found. It was told 4,600 years ago to Pharaoh Snefru by the magician Djadjamankh.
"How do you entertain a bored pharaoh? You sail a boatload of young women dressed only in fishing nets down the Nile and urge the pharaoh to go catch a fish."
Okay, so it loses something in the translation and the passage of time, but I doubt that old Pharaoh soiled his sarong over it.