“How you doing?”, Mick asks.
“Fine, dude”, Bob answers, “hey will you do me a favor… go upstairs and get me my slippers. My feet are fuckin freezin.”
Mick goes up and sees Bob’s hot 21 year old twin sisters lying on the bed. He tells ’em, “Your brother sent me up to have sex with both of you.”
They say, “Prove it.”
Mick shouts, “Bob… both of them?”
Bob shouts back, “Of course!! Whats the point of fuckin one?”