back of a spreadsheet; back of the net

I thought this was a variant on my favourite childhood game, Best (or Dead) Man's fall. You'd take it in turns to die horribly at the hands of your friends, who had choice of weapon. Points were given for inventive means of dealing death. Guns and knives were scorned in favour of the more exotic - garrote, poison, wild animals etc.

I topped out with "Thermo nuclear ICBM."