Two nuns left the convent to sell cookies. One was the Mathematical Sister (M) and the other the Logic Sister (L).
M - Night is beginning to fall and we are still very far from the convent.
L - Sister, have you noticed that a man was following us half an hour ago?
Y-Yes, and what does he want?
L - It is logical. He will want to rape us.
M - My God! I estimate that if we keep walking at this rate, he will catch up with us in 15 minutes. What can we do?
L - The only logical thing we can do is walk faster !!!
M - It's not working !!!
L - Of course not! She did the only logical thing she could do: walk faster!
M - And now, what are we going to do? He will catch up with us in a minute !!!
L - The only logical thing we can do is separate. You go that way and I go this other. He won't be able to follow us both!
So the man decided to follow Sister Logic. Sister Mathematics arrived at the convent, worried about what might have happened to Sister Logic. After a while, Sister Logic arrived.
M - Sister Logic! Thank God you made it. Tell me what happened.
S-she The logical thing happened. The man couldn't follow both of them, so he decided to follow me.
M - And what happened next?
L - The logical thing! I started running as fast as I could, and so did he.
M - And? L - Again the logical thing. He reached me.
M - My God! and what did you do?
L - I did the logical thing. I quit the habit!
M - My God, sister !!! And what did the man do?
He-he also did the logical thing. He dropped his pants !!!
M - Oh no! What happened after?
L - Isn't it obvious, sister? A nun with a raised habit runs much faster than a man with his pants down ..!