Two Clever Nuns

There  were two nuns One of them was known as  Sister Mathematical (SM), and  the other one was known as Sister  Logical  (SL) It  is getting dark and they are still far away from  the convent.   SM:  Have  you noticed that a man has been following us for  the past thirty-eight and a half minutes? I  wonder what he wants.   SL:  It's  logical. He wants to ****us.   SM:  Oh,  no! At this rate he will reach us in 15 minutes  at the most! What can we  do?   SL:  The  only logical thing to do of course is to walk  faster. A little while  later...   SM:  It's  not working.   SL:  Of  course it's not working. The man did the only  logical thing. He started to walk faster,  too.   SM:  So,  what shall we do? At this rate he will reach us  in one minute.   SL:  The  only logical thing we can do is  split.  You  go that way and I'll go this way. He cannot  follow us both.   So  the man decided to follow Sister  Logical.   Sister  Mathematical arrives  at the convent and is worried about what has  happened to Sister  Logical.   Then  Sister  Logical arrives.   SM:  Sister  Logical!  Thank God you are here! Tell me what happened!   SL: The  only logical thing happened. The man couldn't  follow us both, so he followed me   SM:  Yes,  yes! But what happened then?   SL:  The  only logical thing happened. I started to run as  fast as I could and he started to run as fast as  he could.   SM:  And? SL  : The  only logical thing happened. He reached  me.   SM :  Oh, dear! What did you do? 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 for those of you who thought it  would be dirty,   Say  two Hail Marys!   and...  of course - forward this mail!