A man and his wife were spending the day at the
 zoo.
She was wearing a loose fitting, pink dress,
sleeveless with straps.
He was wearing his usual jeans and T-shirt.
As they walked through the ape exhibit,
they passed in front of a large, silverback
gorilla.
Noticing the wife, the gorilla went crazy.
He jumped on the bars, and holding on with one hand
and 2 feet he grunted and
pounded his chest with his free hand.
He was obviously excited at the pretty lady in the
pink Dress.
The husband, noticing the excitement, thought this
was funny.
He suggested that his wife tease the poor fellow
some more by 
puckering her lips
and wiggling her bottom. She played along and the
gorilla got even 
more excited,
making noises that would wake the dead. Then the
husband suggested 
that she let
one of her straps fall to show a little more skin.
She did... And the gorilla was about to tear the
bars down.
"Now... Show your thighs and sort of fan your dress
at him," he 
said. This drove
the gorilla absolutely crazy, and he started doing
flips.
Then the husband grabbed his wife, ripped open the
door to the cage, flung her
in with the gorilla and slammed the cage door shut.
"Now. Tell HIM you have a headache."