A holy hand grenade, with a three second fuse counted as '1... 2... 5!'
Or, to not rip off British sketch comedy... well, actually, I have no original ideas that haven't already been said, although trick grenades (which scare the shit out of people and then burst into flowers or something) would be entertaining.
Or, to not rip off British sketch comedy... well, actually, I have no original ideas that haven't already been said, although trick grenades (which scare the shit out of people and then burst into flowers or something) would be entertaining.