Earlier this week, Elon Musk proposed a “literal dick measuring contest” between himself and tech rival Mark Zuckerberg to squash their ongoing social media beef. Now, thanks to sports gambling site BetOnline.ag, you can actually bet on the outcome of said “contest.” Under the prop titled “Longest Penis During Dick Measuring Contest,” Musk is the current favorite at -200 while Zuckerberg clocked in at a +150 underdog. It didn’t stop there—more serious gamblers can wager on the specific measurements of each’s manhood. The over/under for Musk’s is set to 5.5 inches, if you were curious. Zuckerberg’s is set to 5.