I like the idea. This is a mind game, and we get to make up alllllll the rules. Why not add moral consequences to the snarfling? Something like,
'You really need to have a snarfle.'
'Snarfle? And kill cute little furry baby kittens? Never!'
Personally, I add driving drunk and killing some mother's infant child and destroying a dozen lives forever, but I think you have a great idea there.