B9 — Boss is watching

BRB — Be Right Back.

CD9 — Code Nine, parents are around.

EG — Evil Grin.

FYI — For Your Information.

HAK — Hug & Kiss.

LOL — Laughing Out Loud

LMAO — Laughing My Ass Off

MIRL — Meet in Real Life

MOOS — Member of the Opposite Sex.

MYO — Mind Your Own (Business).

OMG — Oh, my God!

PRW — Parents Are Watching

QFI — Quoted for Irony.

RMLB — Read my Lips Baby.

For more see http://www.webopedia.com/quick_ref/textmessageabbreviations.asp .