I first heard this term in How I Met Your Mother when Ted dressed up as a hanging Chad for Halloween. I tried to look it up & Google basically just said that it was a voting ballot that people used to punch holes out of. But I feel like I’m missing something.. in the show, they would make fun of Ted for wearing an outdated costume
& would tell him that “the hanging Chad reference
Is very old” & that most people wouldn’t understand it. Which signifies some sort of inside joke or understanding, but I don’t get it. please! Thank you!