Mick goes round to see his mate Paddy when Paddy is ill with the Flu.
They have a few Irish whiskies and Paddy is getting tired.
Paddy says to Mick "Would you do us a favour? As I'm nodding off here would you get me my slippers from upstairs"
As Mick heads upstairs he bumps in to one of Paddy's gorgeous twin 18 year old daughters on the stairs heading back to their shared room.
She smiles and he is lost in her eyes so follows her into the room.
He whispers to both the girls "Your dad has sent me up here to teach you the facts of life and make love to both of you".
They tell him to f off as they don't believe him.
Mick is rampant now so steps out of the room, leans over the stairwell and shouts down to Paddy "What, both of them?"
The answers drifts up from down below:
"Well fucking one's no good"
Mick returns to the waiting listening girls with a broad grin on his face...........