Sometimes you just can't help but want to punish someone even if their "crime" against you is relatively minor. Fortunately, you don't actually have to take your own petty revenge if you just read about someone else getting theirs.
Over on Runt of the Web, you can read 40 examples of hilarious acts of petty revenge ranging from messing with a co-worker's mouse to putting a pile of poop on a neighbor's porch after he refused to clean up after his dog.
So check out the whole list here.