Yeah, I know the story. Read it a couple times. It was fun. It's on the archive. Unfortunately, I don't remember the title for sure, and, for some reason, the archive isn't loading for me now. I'm hoping it'll be back soon.
I belive the story is by Bethy, and I think the word "prank" is actually in the title. Should be able to confirm that when the archive comes back up.
Otherwise, a search on the archive should turn it up quickly enough.
Sorry I can't help more right now.
Paul