For most guys, choosing the right color to wear is more a matter of luck than science, especially since roughly 70% of men have some measurable degree of color blindness.

With an entirely European semifinal on the horizon, it’s time to dredge up some fun facts about the World Cup that will impress your friends, humiliate your rivals, and annoy random strangers in pubs.

If it works, it works, right? You remember putting on your absolutely favorite shirt—how amazing it looked, how hot you felt, and how your friends all admired it.