mmmm Mills Bomb at zero feet. It would have won hands down. You are incredibly lucky. Brings an old EOD/Mine awareness saying out.

" If you didn't put it there, then treat it as live"

I once dug some mud out of the fuse well of an old WW2 grenade that was handed in to where I was working. Once I came face to face with the partially detonated fuse I promptly sh*t myself and put it very carefully into an old ammo box and called EOD. Lesson learned.