When a man gets on all fours and spreads his asscheeks apart revealing his asshole. With the buttcheeks representing the large ears, the asshole as the one eye, and the hanging cock as the trunk, the lucky viewer gets an image of an elephant with one eye.
Nick: Hey wanna see a one-eyed elephant?
Slut: Sure Daddy.
Nick: There it is. Now tongue that ass like you do so well.