Two nuns went out of the convent to sell cookies. One was Sister Mathematical (SM) and the other was Sister Logical (SL). It is getting dark and they are still far from the convent.
SL: Do you notice a man’s been following us?
SM: Yes, I wonder what he wants.
SL: It’s logical. He wants to rape us.
SM: Oh, no! At this rate he will reach us in 15 minutes. What should we do?
SL: The only logical thing is to walk faster.
SM: It’s not working.
SL: Of course not. The man did the obvious thing and started walking faster, too.
SM: What should we do? At this rate he will reach us in one minute.
SL: The only logical thing is to split. You go that way and I’ll go this way. He can’t follow both of us.
So the man decided to go after Sister Logical. Sister Mathematical arrived at the convent and became worried that Sister Logical hadn’t arrived. Finally, Sister Logical arrives.
SM: Sister Logical! Thank God you are here! Tell me what happened!
SL: The only logical thing happened. The man could not follow both of us, so he followed me.
SM: So, what happened? Please tell me.
SL: The only logical thing to happen. I started to run as fast as I could.
SM: Then what happened?
SL: The only logical thing to happen. The man also started to run as fast as he could.
SM: And what else?
SL: The only logical thing to happen. He reached me.
SM: Oh, no! What did you do then?
SL: The only logical thing to do. I lifted my dress up.
SM: Oh, Sister. What did the man do?
SL: The only logical thing to do. He pulled down his pants.
SM: Oh, no! What happened then?
SL: Isn’t it logical, Sister? A nun with her dress up can run faster than a man with his pants down.
(And you thought this might be a dirty story! Shame on you. Say two Hail Mary’s.)