It's a beautiful warm spring day and a man and his wife are at the
   zoo. She's wearing a cute, loose-fitting, pink spring dress,
   sleeveless w/straps. As they walk through the ape exhibit and pass in
   front of a very large gorilla, the gorilla goes ape. He jumps up on
   the bars, holding on w/one hand (and 2 feet), grunting and pounding
   his chest w/the free hand. He is obviously excited at the pretty lady
   in the sheer dress.
   
   The husband, noticing the excitement, suggests that his wife tease the
   poor fellow. He tells her to pucker her lips, wiggle her bottom, and
   flirt w/the ape.
   
   She does and the gorilla gets even more excited, making noises that
   would wake the dead. Then the husband suggests that she let one of her
   straps fall; she does, and the gorilla is so excited, he's just about
   to tear the bars down.
   
   The husband then suggests that the wife lift her dress up above the
   thighs... this drives the gorilla absolutely crazy.
   
   Then, quickly the husband grabs his wife by the hair, rips open the
   door to the cage, slings her in w/the gorilla and says, "Now, tell him
   you have a headache."