3 Irishmen in a bar.
Paddy says, "My local's better than this. In my local you buy 2 drinks and get the 3rd free."
Mick says, "Well in my local you buy 1 drink you get the 2nd free."
Murphy says, "That's nothing, in my local you buy the 1st drink, then the 2nd, 3rd, 4th, 5th, 6th and 7th are free.
Then you go out the back and get a [sh*g].
"WOW," says the other two. "How often have you done that?"
"Never" says Murphy, "But my sister has."
OK
I'll get my coat!