Not really funny, but almost true

Courtesy of my friend Bill Champ, this:

A cowboy walks into the bedroom, carrying a sheep in his arms, and says, "Honey, this is the cow that I make love to when you have a headache."
His wife, lying on 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 cowboy replies, "If you weren't such a bitch, you'd realize that I was talking to the sheep."