A Zombies vs Humans game at Alfred College in New York shut down the entire campus when a Nerf gun used to "stun" players who are zombies was confused for an actual gun. Yeah, I don't know how that happened, either.
"One faculty member saw one of our players walking through an academic building. And we think they just glimpsed one of the Nerf guns and thought it was a real gun," said Alex Geddes, the game's organizer.
For any pod people out there who never had a childhood, this is what a Nerf gun looks like. I hope to God that that faculty member doesn't have tenure. Seriously, if your kid goes to Alfred, congratulations: you've officially failed as a parent.
(thanks to Upstate Underdog for the tip; original story with Va Tech-style scare here)