The Cowboy and the Sheep

A cowboy walks into his 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 bed reading a book looks up and says, "If you weren't such an idiot, you'd know that was a sheep, not a cow."

The cowboy replies, "And if you weren't such a bitch, you'd realize I was talking to the sheep."