A boy is at school and he hears the older kids
talking about pussy, and their bitch.  The boy
being confused by this goes to his mother. 

"Mom", the boy says "Mom what is a pussy."  The
mother being startled by this thinks puick and 
finds the closest dictionary and opens it up to
a picture of a cat and says "son that is a 
pussy." 

The son then asked "what is a bitch?" The mother
again thinking quick again opens up to a picture
of a dog and says "son this is a bitch." 

The son walks away still confused sees his father
watch television.  The son walks up to his father
says "Dad, What is a pussy?"  The father does not
want to miss the baseball game quickly whips out 
his penthouse magazine to the centerfold grabs a 
marker and draws a circle around the vagina and 
says "son this is a pussy!" 

The son starts to understand what the older boys
are talking about says "Well what is a bitch?" 

"That's everything out side the circle!"