I remember it starting back on reddit in response to the whole “alpha” thing. The point was to goad the alphabros to ask “what’s sigma” then hit them with “sigma nuts.” They would get so pissed off, there was a whole subreddit for barbaric sigma memes mocking them and posting screenshots of sigma nuts.

Then they started taking it seriously, and the joke shifted to asking what they thought sigma meant, and the subreddit started posting screenshots of the insane replies.

Then, people started taking it TOO seriously, and everything went downhill.