Meme. Uh, joke, make pataphorical references to media we've absorbed, sometimes involving putting the words of characters into cats caught in awkward poses. Making obscure-ass triple pun reacharounds that would make Maimonides squint.

For example.

[He posts this... incomprehensible garbage meme, and then winces and shrugs and gets anxious and stuttery.]

This would probably mean more to you if you had ever heard of Another World Online. Or Kamen Rider Build. Or - or, uh, okay, bad example...