Morris starts talking to two women in a bar on Valentine's Day. They turn out to be
Siamese twins, and they wind up back at his apartment.

He makes love to one, and then starts to work on the other. Morris realizes the first one might get bored watching, so he asks her what she'd like to do.

She 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 Morris' apartment
building. One of the girls says, "Let's stop up and see that guy."

The other girl says, "Gee ... do you think he'll remember us?"

A fish and a bird can fall in love, but where will they build their nest?