At a church one day, the nuns are lining up to go into confession. The first one goes up to the priest and says: "Bless me father, for I have seen a man's penis". The priest agrees that this is a sin, but tells her to splash her eyes with the holy water, and all will be forgiven.
The next nun comes up and says: "I have sinned as well father... I've touched a man's penis" The priest says that this too can be forgiven, and that she should wash her hands with the holy water.
The priest then looks over at the next two nuns in line, and sees them fighting to see who will go next. He gets up and asks them why they are fighting. The fourth nun replies. "Well, there's no way that I'm drinking that holy water after she sat in it".