This Sunday, halfway through Tom Brady's epic struggle to avoid eye contact with Richard Sherman, Katy Perry's Super Bowl performance will reach over 100 million viewers in the US alone.
So while most gamblers will be putting their money down on the New England Patriots or the Seattle Seahawks, some smart bettors will be wagering on something far more predictable: Katy Perry's boobs.
Yes, Katy's famous rack is one of many Super Bowl prop bets that can earn you some big game cash even if you know nothing about football:
Right now, the odds are heavily in favor of Katy bringing the girls out on the field:
The current money line is -500 for cleavage and +350, which means you'd have to $500 on boobs just to win $100, but can you ever really go wrong betting on boobs?
Remarkably, the smart money might be on "no boobs," as judging from Katy's press conference this week, it looks like she may be favoring a more conservative look, possibly in accordance with the league's wishes.
There are some other interesting prop bets out there as well, such as what color hoodie Bill Belichick will rock, and whether or not Marshawn Lynch will grab his crotch after a touchdown.
Of course, the really big question is whether or not there's any truth to the rumors that Katy will diss Taylor Swift during her performance.
One thing's for sure: unlike Tom Brady's balls, Katy's ta-tas are sure to be fully inflated.