I was, and then you asked if there were any heroes. haha, i had to pile on the crazy at that point.

PS: I didn't know that about grenades. Then I looked it up. couldn't find any definitive answer so i'll take your word on it since it sounds reasonable that you'd design the things to be somewhat shock resistant. Then again, the modern ones are called impact grenades. that explode on impact instead of using a timer. not sure if the same goes for those things.