Dr. Dave slept with one of his patients and felt guilty all day long. No matter how much he tried to forget about it, he couldn't. The guilt and sense of betrayal was overwhelming. But every once in a while, he'd hear an internal voice that said, "Dave, don't worry about it. You aren't the first doctor to sleep with one of their patients, and you won't be the last. And you're single. Let it go."
But invariably, the another voice would bring him back to reality. "But Dave, you're a vet."
A farmer and his wife were lying in bed after a little quickie. The farmer stroked his wife's bare breasts and said, "Y'know, honey, if these gave milk, we could sell the cow."
Sighing, his wife grabbed her husband's dick and said: "And if this stayed hard a little longer, we could fire the farmhand."
