The line draws on Five Nights at Freddy's lore, where Charlie Emily is the young victim murdered by William Afton, a tragedy that later shapes much of the series' story. Online, creators lifted the blunt explanation out of that dark backstory and turned it into a roast format, using it to declare a debate or insult contest decisively over. It spread through FNAF fan edits and short-form meme videos, where its shock value comes from treating a grim lore detail as casual trash talk. That contrast keeps it popular with fans who already know the reference.