An 8 year old boy walks home from school each day past an 8 year old
   girls house. One
   day as he is passing by, carrying a football, he can't resist taunting
   the girl. He holds up
   the football and says, "See this football? Football is a boys game,
   and only boys can have a
   football!". The little girl runs into the house and cries to her
   mother, "I want a football!"
   Being a woman of the 90's, her mother runs out and gets her one.
   The next day the girl is waiting for the little boy and he rides up on
   his bike. She holds up
   the football, "Nah Nah Nah Nah". The little boy angryly points to his
   bike and says, "Oh
   yeah, well this is a boys bike and only boys get boys bikes and you
   can't have one!" She
   runs in to mom and the next day is waiting for him on her new boys
   bike.
   The little boy gets furious and pulls down his pants, and pointing to
   his most private of
   parts says, "Look, only boys have these and your mom can't buy you
   one!!!". The next
   day he walks by and asks her, "Well, I guess I showed you!" to which
   she promptly pulls
   up her dress, points to her parts and proclaims "My mother tells me
   that as long as I have
   one of these I can have as many of THOSE as I want!