[user104658]

Speaking of Tom Cullen; I'm CONVINCED that the "Hodor = Hold The Door" twist is a Tom Cullen rip off .

Throughout "The Stand", Tom (who is illiterate and learning disabled) repeatedly says "M-O-O-N... that spells [insert incorrect word]" at random times, like "that spells bicycle!" etc... then towards the end at a moment where he plays a pivotal role... he just "knew what to do" (because, The Shine) when there's a big full moon in the sky and he says; "M-O-O-N ... That spells moon!".

Hold The Door.