Well being the Hip & mega cool DAD that I am

I'm always trying to learn and keep up with the “in things” in the OC and recently I learned the following:
The pups today average age 19-26 appears to have replaced our word (COOL and Bitchen) with the following word:
Chill.. (example)

That’s cool.. NO

that chill..
That is bitchen! NO!

that’s chill
Don’t know if I like it??

I'm thinking not! But I'm trying to be my parents at the same time, DAM it sucks being40!..
Do you think we should change the name from cool and bitchen to chill???
What words have you heard that are questionable??