There were 4 nuns wating at the pearly gates of heaven. St Peter comes out to welcome them but tells each nun that to enter they must answer a question and the response must be the truth.
St Peter first goes to mother superior and asks "have you ever touched a mans privates?" to which mother superior replies "NO, never". St Peter accepts the answer and allows mother superior to go through the pearly gates into heaven.
St Peter then comes to the second nun and asks the same question to which the nun replies "Yes sir, with my hand". St Peter says "ok, not a problem, just wash your hand in holy water and you can come in.
St Peter then comes to the 3rd and 4th nun who are for some reason squabbhling. St Peter says "Now, Now, theres no reason to fight, there is plenty of room inside for everyone to which the 4th nun shouts "If you think I’m washing my mouth out in the holy water after she’s had her arse in it you’ve got another thing coming.