For an attempted assassination, there sure was a lot of giggling going on.

"I'm going to feel pretty good about shooting someone, if I don't die first,'' said would-be assassin Nicole Califano, who was drinking a beer, which was not helping to steady her trigger finger any.

Califano is one of 130 contestants armed with water pistols who are stalking each other this month throughout San Francisco, waiting to ambush and squirt total strangers.