Everybody's gotta be somewhere

A man is making love to his best friend's wife when they hear the husband's car in the driveway. He dives into the closet.

The husband comes in, goes to the closet to hang up his jacket, sees his friend standing there naked, and says, "Lenny, what are you doing here?"

Lenny sheepishly shrugs and says, "Everybody's gotta be somewhere."