Four nuns are all die in a bus crash together and go to heaven. Standing at the Pearly Gates, St. Peter asks the first nun if she had ever touched a man's penis. She replies "Yes, I touched one with my finger." St. Peter tells her "Dip your finger in this holy water and you may enter." She dips her finger and then enters the Kingdom of Heaven.
St. Peter turns to the next sister and asks her, "Have you ever touched a man's penis?" She replies, "Yes, I've held one in my hand." He tells her to dip her whole hand in the holy water and then she may enter. She does as he says and enters the Kingdom of heaven.
He turns to the next sister and is just about to ask her the same question when the last nun jumps in front and says "If you think I'm going to gargle with that holy water after she sticks her butt in there, you got another think coming."