thats definatly a trampoline spring! i could totaly see how that shit could happen, when i was a growing up i had one and it seemed like all my friends did too, and when those things get some age on them and you exceed the weight limit those fuckers will start flyin!
I got shot in the eye recently with a 6mm BB metal pellet. It sucked balls. It's true what they say about wearing protective glasses, now I have to live to with a slight blur in my left eye for the rest of my life!