Murphy calls to see his mate, Paddy, who is bedridden with a broken leg.

Paddy says, "Me feet are freezing mate, could you nip upstairs and get me slippers?"

"No bother," he says, and he runs upstairs and there are Paddy's two stunningly beautiful 19 year old twin daughters sat on their beds.

"Hello there girls, your dad sent me up here to fuck ya both."

"Fuck off you liar!"

"I'll prove it," Murphy says.

So he shouts down the stairs, "Both of them, Paddy?"

"Of course, what's the use of fucking one?"