Cover the right side of your screen with a piece of paper - see how many you get right. (super high-tech, I know) Don't cheat!
1. DM: Direct message
2. JK: Just kidding
3. BRB: Be right back
4. TBH: To be honest
5. IRL: In real life
6. NSFW: Not safe for work
7. TTYL: Talk to you later
8. NBD: No big deal
9. IMO: In my opinion. Or, IMHO is "in my humble opinion."
10. FTW: For the win
11. SMH: Shaking my head.
12. IDK: I don't know
13. IDC: I don't care
14. MSG: Short for the word "message"
15. OMW: On my way
16. G2G: Got to go
17. TFW: That feeling when
18. MFW: My face when
19. ILY: I love you
20. IMU: I miss you (Yes, a 'U' even though the word "you" starts with a 'Y'.)
21. ICYMI: In case you missed it
22. SRSLY: Short for the word "seriously"
23. TLDR: Too long, didn't read (Technically, there's a semi-colon in that one: TL;DR.)
24. BAE: Before anyone else (Bae is also just short for "baby" or "babe.")
25. SOML: Story of my life
Your score:
1-5 wrong - A - you're trendy!
6-10 wrong - B - you're getting old!
11-15 wrong - C - you're old!
15-20 wrong - D - but you're still good looking!
21-25 wrong - F - do you still type with one finger on your phone?