This is 100% old-man energy, but I dipped back over to reddit after a week or so and man did I forget how many completely random acronyms get thrown around there... FW, TIL, ELI5, FWIW, IANAL...
Don't even get me started on ETA, which should mean "estimated time of arrival", but has instead been used to mean "edit to add", even though just putting EDIT means the same thing??
I see that kind of stuff a lot less here, and I'm assuming it's a mix of older audience and smaller user base, but so far it's been so much nicer actually understanding what everyone is saying here.
Believe it or not, the context in which I saw FW, the person meant "fuck with". It was a comment about a tattoo, and their response was "Honestly, I kinda fw it."