Ordering an unrequested pizza to someone'shouse or apartment, to their complete surprise. Generally followed by them coming online and cussing out whoever did it (if they know).
John totally got pizza'd, I hope he likes the smell of fresh pepperoni at 2am!
When someone leaves their computer unlocked and you change their desktop background to an image of pizza, preferably a small image that is tiled several hundred times.
"Look! Greg left his computer unlocked!"
"Oh, dude, he is totally gonna get pizza'd!"