Abbreviations and vacabulary

With 2:

F2F - Face To Face

F2T - Free To Talk?

G2G - Got To Go

U2 - You Too

2 - too 

With 4:

B4 - Before

B4N - Bye For Now

4 - for

With 8:

GR8 - Great

H8 - Hate

L8 - Late

L8R - Later

STR8 - Straight

W8 - Wait

ASAP - As Soon As Possible

B/C - Because

BF - Boyfriend

BFF - Best Friends Forever

BRB - Be Right Back

BTW - By The Way

CU - See You

FAQ - Frequently Asked Questions

FYI - For Your Information

GF - Girlfriend

IC - I See

IDC - I Don't Care

IDK - I Don't Know

IK - I Know

ILY/ILU - I Love You

IMHO - In My Humble Opinion

J/S – Just Saying

K - Okay

LOL - Laughing Out Loud -or- Lots Of Laughs

LMAO - Laughing My A** Off

MSG - Message

ORLY? - Oh, Really?

OMG - Oh My Gosh -or- Oh My God -or- Oh My Goodness (for the older crowd)

PLS/PLZ - Please

POV - Point Of View

PPL - People

Q - Question

ROFL - Rolling On the Floor Laughing

R – Are

SOZ/SRY - Sorry

TBC - To Be Continued

TBH - To Be Honest

THX - Thanks -or- Thank you

TMI - Too Much Information

TTYL - Talk To You Later

TY - Thank You

U - You

UR - You Are -or- You're

W/ - With

W/E - Whatever

W/O - Without

WTF - What The F***

XOXO - Hugs and Kisses

Y - Why

YW - You Are Welcome

And for parents:

P911 - Parent In Room

PAW - Parents Are Watching

PIR - Parent In Room

POS - Parent Over Shoulder
PRW - Parents Are Watching

SOS – Someone Over the Shoulder

to keep an eye on - to watch someone or something; to monitor someone or something closely
unattended - not supervised or looked after
to spit - eject saliva forcibly from one's mouth
each other - used to refer to each member of a group when each does something to or for other members: "they communicate with each other in French".
hippies / a hippy - (esp. in the 1960s) A person of unconventional appearance, typically having long hair and wearing beads, associated with a subculture involving a rejection of conventional values and the taking of hallucinogenic drugs

fuck /fək/ - vulgar. Have sexual intercourse with (someone)
fog /fa:g/ - a thick cloud of tiny water droplets that obscures or restricts visibility

By Kate and Ondrej