A woman and her friend are visiting the zoo. They are standing in front of the big silver back gorillas cage when one woman makes a gesture that the gorilla interprets as an invitation. He grabs her, yanks her over the fence, and takes her to his nest in the pen. There he ravishes her and makes passionate love to her for about 2 hours till he is tranquilized, and the lady taken to hospital.
Her friend, deeply concerned, visits her the next day. "Are you hurt?" she asks.
She replies, "Of course I'm hurt! He hasn't called! He hasn't written!"