Posted: 9/21/2010 12:00:00 AM
A man and his wife are having sex when their 10 year old son walks in and screams, "Oh my God!"
The husband says "Ill go to his room and explain to him what was going on."
When the father walks in he finds his son having sex with his grandmother.
The father screams "Oh my God!!!"
"Yeah," the son replies, "Its not so funny when its YOUR mother!"