back in my day, we had to post memes updog both ways

I disagree completely. Millennials on average make an effort to embrace gen-z slang. And millenials actually respect the fact that new gens have new lingo. And they're open to change. Boomers just fucking hate all newer gen lingo and think that their language is superior because boomers only care about themselves. I think millenials will continue to be flexible when it comes to adopting newer slang. Sure. Younger gens will always make fun of the olds, and that's to be expected, and it's understandable, but it won't be nearly as bad as millenials making fun of their boomer parents for being completely tone deaf.

Also, what is updog?