I saw some douchebag dropping decoys via engineering next to egg spawns in Silvermoon. Pretty sure it was an ally rogue. Anyhow, he was flagged (pvp server) and dropping little yellow-nameplate bunnies everywhere which were somehow killing unflagged nubs gathering eggs. Maybe they right clicked them? Unfortunately you will only be able to kill lowbies with this, but I thought it was freaking hilarious and wanted to share. Just don't overdo it or you will likely get into a lil trouble for repeated griefing/interference yadayadayada.
Have fun!