I'm Hungry


A certain college professor was notorious for getting off the 
lecture topic and on to his favorite subject; the evils of 
marijuana.  Off he went one day into his inventory of horrors 
about marujuana.

"Used regularly, pot can cause psychic disorientation, sterility, 
cancer and castration!"

"Now wait a minute, Professor," interrupted a student. 
"Castration?!"

"You bet son," replied the professor smugly. "Just suppose your 
girlfriend uses marijuana, you're having sex, and she gets the 
munches?"


[Thanks to rubin]