How Well Do You Know Internet Slang?

Amy brought me some Internet slang this morning and I have to admit, outside of LOL or OMG, I really don't know any Internet jargon or slang. I never use it. But apparently many people do and I'm wasting huge amounts of time actually typing out phrases when I text or send emails.

Do you know any of these, and do you use them?

AFAIK - As Far As I Know

CSB - Cool Story Bro (my personal favorite)

FTFY - Fixed That For You

GG - Good Game, Good Going, Good Guy, Good Girl

NBD - No Big Deal

NGL - Not Going to Lie

SMDH - Shaking My Damn Head

TBH - To Be Honest

I guess I'm old school. Internet slang and emojis I've yet to master. The question is, will I ever? Man, I feel incredibly unhip right now.