Theres this guy hosting a big costume party in his swanky uptown apartment one evening when he notices one of his guests has arrived wearing nothing but a pair of blue jeans. The host walks up to the man to inquire what the guest is supposed to be.
"Oh, i'm a premature ejaculation." Replies the guest.
Puzzled, the man probes further "Huh, well then why did you arrive not wearing a shirt or even any shoes, for God's sake?"
"I just came in my pants."