A good one.

[Zan]

Dave comes home from work early one day.
He walks in to the kitchen and sees his wife on her knees, scrubbing the floor. He watches the rhythmic movements of her bum stuck high in the air for a few seconds, before he can't take it any more.
Without a word, he lifts up her skirt, slides in and gives her the pounding of her life until they both Orgasm loudly. Then he zips himself up, gets to his feet and kicks her up the arse as hard as he can.
"What the fuck was that for?!" she screams "That was for not turning round to see who it was." he replies.