learning something new

hi guys. i just wanted to talk to you about something most adults don't know...abbreviations.
stuff like lol. well, i wanted to know just how much teenager you guys have in you so i've decided to give you a quiz on abbreviations. p.s mom got an 945 on her's so don't fret.

15 points each

lol:
gtg:
nm:
idk:
tmi:
ttyl:
 
1 point each  * = not very used

C=              *B=               4=
U=                K=
R=                Thanx=
Y=                2=

Bonus 5 points

RP:

effort = half the point

hope you make the cut