A man is in the shower, and finds that he's run out of shower gel and shampoo.
There's a small shop next door, and he thinks that there's no point getting dressed for a two minute shop.
Round he pops, and gets his shower gel and shampoo. Just as he steps out of the shop, 3 nuns are walking down the street.
He freezes, and pretends to be a manniquin.
The nuns approach, and one pipes up "Hey, I think this is one of those new on-street vending things"
She grabs hold, and starts pulling. "Look, I've got some shampoo"
The second nun has a go, and says "Ooh, I've got some shower gel"
The third nun can't wait to see what she'll get - "Nice! Hand cream"