Even if you've played a certain sport for your entire life, there's a chance you might not know all the rules.
The users of Reddit proved this with a thread asking a simple question: "What are the dumbest rules in any sport?"
After less than a day on the site, the question has already garnered over 4,000 responses. Keep reading to see some of the most puzzling sports rules, according to Reddit.
NFL Football
"In the NFL, if you fumble anywhere on the field and it goes out of bounds, you get the ball back where it went out. But if it goes into the end zone and out of bounds, not only do you lose possession, but the other team gets the ball on the 20." - Electric-Banana
"In the NFL you're allowed to challenge a call, but you're not allowed to challenge the lack thereof." - northCorrea
"Pass interference in (American) Football. I have never understood the concept of this. Isn't the whole point to interfere with the receiver's ability to catch the football? I'm not saying we should be going full WWE here and saying people should be slamming each other to the ground, but why are we penalizing players for doing the job they're supposed to be doing — stopping receivers from catching footballs?" - NightwingDragon
Hockey
"In the NHL, you get a two-minute minor penalty for having your jersey tucked in." - jahenry13
Chess
"If one player has only the king remaining but cannot move without getting into check-mate, it's a draw." - HellTanner
"In chess for women, there is a rule that a woman has lost a game if she has too much cleavage showing. If her opponent claims this happens, there is some kind of jury who will decide whether the woman has indeed too much cleavage showing or not." - Xadya
See the rest of the story at Business Insider