The act of modeling someone's ass with plaster instead of using water to activate the plaster, you use your own ejaculation, then spread the plaster all over the person's ass in resemblance to a baby diaper.
A person who sits long periods of time on their ass causing it to widen and become platform like. It will take shape of the seat of the chair. More likely a fat person on welfare who has no life.
Jerry points out to his son Tom and says "Look at your mom sitting in the chair on the computer all day, I think she's developing Planter's Ass. "
Ex. 1 - HOLY SHIT I JUST GOT ASSBLASTED WITH AN ASSBLASTER9000
Ex. 2 - Man 1 - I hear that George Bush is using the secret Assblaster 9000 to take down those dirty sandniggers
Man 2 - Yeah I hear that too
George Bush - YEE HAW MOTHERFUCKERS WOOOOOOOOOO
Ex 3 - Girl 1 - Some dude just tried this move called the assblaster 9000 on me
Girl 2 - Yeah that happens sometimes
George Bush - THAT WAS MEMOTHERFUCKERS WOOOOOOOOOOOOOOOOOO