I’ll go first: r/kitty. One of the hundred grillion cat subs back on Reddit, the culture in this one was you posted a cat picture, and the only word allowed in the title or in any comments or replies was “Kitty.”
Someone is using that subreddit for covert communications, I just know it. Either on the level of “if u/PM_me_your_nostrils posts an orange cat, we attack at dawn!” or there’s some steganography going on with the pictures, but that subreddit was too stupid to be as active as it was.
WafflePwn’s brother (the kid who tried shoving a remote up his ass because of Warcraft account cancellation) actually documented a true and genuine freakout. The parents forced the older brother to produce subsequent videos as a means of making it look like they were just making candid freakout videos all along, in order to protect the younger bother’s shattered public image (and probably social life).