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.
RESIST ALIEN SOCK THEFT! Use a mesh bag to keep all your socks together in the washer. Human sock retention is everyone’s responsibility!
Silly aliens, they don’t know how to make their interdimensional portal technology resist these dreaded “mesh bags”… Yet! 👽