There's a duck staying in a hotel and he's having a few drinks in the bar, when he notices a woman sitting alone and starts chatting with her.
They hit it off, so the duck suggests going back to his room for a nightcap.
The woman agrees.
One thing leads to another and they end up on the bed.
This is all very unexpected for the duck, who's totally unprepared.
He rings room service and asks if they can supply him with a condom.
"Certainly sir," a voice on the end of the phone replies. "Shall I put it on your bill?"
The duck yells back: "What do you think I am, some sort of pervert?"