This one didn't "go wrong," but it was hilarious when dude got REALLY upset.
I built furniture for a while. The day before I started, one of the dudes was chatting it up, and while he was telling a story or whatever, leaned his hand back and set it on the table....the table with the table saw...which was running all day.
Anyway, he lost a couple fingers. So this place, I quickly find out, is prank-central. You'd think that would've changed after dude lost his fingers, and you'd be dead wrong. Guys would bring in waterballoons and launch all out assaults, blocking all the exits and just waylaying your ass. I was building an entertainment center on day 2 and got hit in the back of the head with a frisbee. When my brother worked there, he brought in a coffee can full of black-cats, waited for the finish guy to go in the spray booth, lit the fireworks, closed the lid, and tossed it in. Dude ran out, spray gun shooting red stain everywhere, including all over himself. He said he thought the fan had come loose.
So after a month or so, dude who lost the fingers comes back to work. For a big dude, he's a little bit of a drama queen. He's wearing this "Special glove" to keep dust off of his little fingerlet-nubs or whatever, and everyone's giving him a hard time about it. So at lunch on day 3 or so of him being back at work, bossman says "Hey, he left the glove. We've got to do something to it."
Yours truly came up with the "Michael Jackson" theme. So finish guy sprays it white with metallic flake and airbrushes "WHO'S BAD?" on it.
There was that hilarious anticipation, as we ALL (dozen or so of us - plus the dudes and chicks from the sanding room) came back from lunch 10 minutes early, peeking over our shoulders every 2 seconds. Finally dude sees it and loses his berkeleying mind. Starts speaking in tongues, screaming about how it's some kind of "special prescription glove and somebody's gonna pay for it," etc. Finally he asks "WHO THE berkeley EVEN COMES UP WITH SOME MESSED UP E36 M3 LIKE THAT?"
He and I didn't get along so well after that.