Ahhh, humor. It’s been around for ever. The oldest according to academic researchers:

“Something which has never occurred since time immemorial; a young woman did not fart in her husband’s lap.”

The double entendre isn’t new either, as this one from 10th century Britain shows:

“What hangs at a man’s thigh and wants to poke the hole that it’s often poked before? A key.”

Laugh today. You’ll be glad you did.