This one may have been said before...
A guy is screwing a girl, and everything is going fine until the girl cries out "Stop! Stop! It hurts too much!"

The guy sighs and goes and gets some Vaseline, and then they carry on...five minutes later she again cries out "Stop! The pain is horrible!"

So they guy, a bit perturbed, gets off her and goes and gets some lube. They begin again. The guy is just getting into it when the girl AGAIN cries for him to stop "Please stop! The pain is EXCRUCIATING!”

And the guy replies: “Wow, that’s a big word for a five year old!”
(quis, Fri 10 Sep 2004, 6:46, Reply)