1) Applying one's bare buttocks to the window of a moving car.
2) To depress one's unclothed posterior onto another's person. Usually done in a forceful manner.
The little punks in the car next to me gave me a pressed ham and I saw the kid's fruit salad.
While my girlfriend slept on the couch, I dropped my pants and gave her a pressed ham on her face.
What you see when you are mooned by a male. It is the collection of man-junk from a rear view.
While being mooned by Cassidy, I had the un-godly privilege of seeing his fruit salad.