Low key/low-key/lowkey, has been used well before gen z in the same way. It's definitely gotten more popular though

i used lowkey in the 90s

My use of kickback goes back to late 90s / early 00s.

A kickback was more "formalized" than just hanging out, but smaller than a party. Same general premise of there being drinks and food at someone's house at a certain time and date, but the expectation is that it would be much more chill. Maybe 6-10 people or so, hang out, drink some beers, maybe smoke a bowl, that kind of thing.

That's a verb, this kickback is a noun, like an event for hanging out at.

I’m guessing Gen z adopted “kick back” (verb) and made it “kickback” (noun) based on other comments in this thread? We would not have used it that way in the 90s.

I am Gen X, and have never used any of the things in this meme except solid. Iunno where u you ou grew up but that is not Gen X.