Tom reminded me of this one which I came up with after what can best be described as an unusual trail of thought. Is it a bit too far?
INT. LOG CABIN - DAY
Everything is cartoony. The green giant is sat masturbating with his cob of corn penis.
GREEN GIANT
Ho..ho...HOOOOO!!!
He ejaculates onto the screen. A tin can and some text appears on the screen which matches the voice over.
V/O
All new creamed corn from the Green Giant.
The green giant jingle plays.