Fan theories can be fun, especially the more wild ones, but there are some that become so popular that it's simply grating to hear about it after a while, or others that are so wrong they just make you mad.

The show, which is set in South Korea, portrays hundreds of cash-strapped individuals competing in a tournament of deadly children's games and riddles, with one outstanding final competitor destined to win life-changing wealth.

Here are 5 perfect group costumes for this year's Halloween Festivities that will impress everyone you see.

Sure, the CHARACTERS on your favorite show have inside jokes and running gags, but what about gags you only get if you've already seen the whole show? Or ones that you'll only understand if you have a whole LOT of fandom context? There are deep dive jokes on shows like The Office and Brooklyn 99 that only active superfans will get.