Super Bowl prop bets are sooo stupid. By that I don't mean "Ray Rice will get more than 95 rushing & receiving yards," because that stuff is fairly predictable.
I'm talking about people betting on the coin toss, that is -115 odds for either bet, which is literally a tax on the stupid. No matter who wins, the betting will be relatively split down the middle and the house rakes in cash.
If you make a couple $5 bets, no big deal, but I have friends who legitimately throw $50 down on bets like this and it's just hilarious watching them freak out and curse at the TV because some guy didn't call "tails."