Wipeout

A husband is getting dressed for work and his wife asks him to go down on her. He says later, because he’s got an appointment with his dentist in the morning, and he doesn’t want the dentist to find a pube in his teeth. Eventually however, his wife gets her way, and when they’re done he brushes his teeth, she assures him the coast is clear, and he heads out the door.

And of course, the first thing the dentist asks him when he sits down for his examination, is whether he went down on his wife this morning.
“Oh god, there’s a pube in my teeth, isn’t there” – the dude panics, absolutely mortified.
“No, ” – says the doc – “but there’s shit in your beard”.