Cowboy

Cowboy walks into the bedroom carrying a sheep in his arms and says, Honey, this is the cow I make love to when you have a headache. The wife, laying in the bed reading a book, looks up and says, If you weren't such
an idiot, you'd know that's a sheep, not a cow. The guy replies, If you weren't such a bitch, you'd realize I was talking to the sheep.