A top or tail pizza
In the Super Bowl, calling the coin toss correctly can be a pretty big deal. Not just for the competing teams but for gamblers everywhere. Papa John’s was one such gambler who failed completely by offering a free pizza to people who could guess the coin toss correctly. A registered email address was all it took to get validate your bet.
One pizza lover decided to make 60 different accounts and bet half of them on heads, the other half on tails. Whichever way the coin toss ended. This customer would be neck-deep in Papa John’s during the Super Bowl!