Look what we found!

Oh, man, this could have been tragic:

Three children picking up trash along a river in Hudson [Wisconsin] for community service work found much more than garbage. Charlie Thompson, 11, Maddie Roth, 10, and Demetri Roth, 8, came across a hand grenade, picked it up and headed home to show off their discovery.

On their way back Monday, they ran into a neighbor, who immediately called 911. Hudson police cordoned off the block, then determined the grenade wasn't a danger, even though it still had the firing pin inserted. Sgt. Eric Atkinson says the grenade was rusted and contained no powder.

They're lucky they didn't blow themselves to bits. But, honestly, what kid that age wouldn't pick something like that up? I know I would have. After all, kids are stupid.