Happens all the time

A guy starts talking to two women in a bar, they turnout to be Siamese twins, and they wind up back at hisapartment. He makes love to one, and then starts to work on theother. He realizes that the first one might get boredwatching, so he her asks what she’d like to do. She says, „Is that a trombone in the corner? I’d loveto play your trombone.“ So she plays it while he screws her sister. A few weeks later, the girls are walking past the guy’sapartment building. One of the girls says, „Let’s stopup and see that guy.“ The other girl says, „Gee…do you think he’d remember us?“