So me and my D&D group have an ongoing bit where we just kind of point out instances of the number three.
Every time a dice rolls a nat three, that's three. Every time we're presented with three options, it's always three. Every time we roll three of the same number, that's three. Even when we roll a nine, that's just three threes. or six, its just two threes. We've even gone so far as to replace words with "for" in them, like "forget" with three, to make "threeget", "threecast", "threegery".
I have no earthly idea why this bit started, apparently Starcraft 2 has something to do with it.
Anyway, this bit breached containment to some of my other friends last year and they fucking hate it.