Well this is my first post here and I hope it was not posted before.
A smooth dude picks up a girl in a bar and after a few drinks they go home together.
After some more drinking and talking, they get undressed and climb into bed.
After a few minutes, the girl starts laughing!
The guy askes her, "What's so funny?". "Your organ," she giggles. "It's a bit on the small side!".
He shoots back acidly, "Well, it's not used to playing in cathedrals."