It Makes a Difference to the Sheep

but it would have made a good story if it did:

A beautiful student goes to a male professor's office and says, in a breathy voice, "Professor . . . . I'd do anything to get an A on your exam."

"Anything?" the professor asks, conspiratorially.

The student leans closer. "Anything," she says.

The professor says, "Would you . . . study?"

Thanks to Eugene Volokh for the story (I don't think this has happened to him either).