Double Act

[Wizzo]

A guy starts talking to a pair of Siamese twins at a bar and after a few drinks, they wind up back at his apartment. He makes love to one, and then starts to get to work on the other. He realizes that the first one might get bored watching, so he asks her what she'd like to do.

She thinks about it a moment and says: "Is that a trombone in the corner? I'd love to play your trombone." So she plays it while he makes love to her sister.

A few weeks later, the girls are walking past the guy's apartment building. One of the girls says: "Let's stop up and see that guy."

"Gee, I don’t know," the other girl says, "do you think he'd remember us?"