Dude

And I still use it

This is a pretty keen question

I use “Cool” quite a lot, but I don’t really know if that’s even considered slang any more at this point.

I’m east coast. I have a friend from California who calls all his friends “homies.” It is perhaps his most endearing quality.

I still call stuff “neat”.

I can’t use it 'cause I’m a white boy, but I love unironic jive talk. A while back, I was watching a documentary about the black panthers and I think that was the first time I’d heard real people talking like that. Dudes were cool.

“Groovy”

It’s part of my mind being rotted by Evil Dead

Gnarly

I’m in my 40s. At a family reunion my boomer uncle was super into my usage of “dope”. I had to explain to him that this isn’t cutting edge, it’s 30 years old.

“I dig it”

Yeet (is this old yet)

I just cannot get beyond “rad”.

I still use “cool beans” Andy Samberg style
https://www.youtube.com/watch?v=TOUrLn1FFCA

“Hotdog!”

Thanks Jimmy Stewart!

Wazzzaapp