BRT = Be Right There
BS = Big Smile
BT = Byte This
BTDT = Been There Done That
BTSOOM = Beats The Sh Out Of Me
BTW = By The Way
BTWBO = Be There With Bells On
BWDIK = But What Do I Know?

BWO = Black, White or Other
C:
Cam = Web Camera
CIAO = Goodbye (in Italian)
CID = Consider It Done
CIO = Check It Out
CIS = CompuServe Information Service
CMF = Count My Fingers
CSL = Can’t Stop Laughing
CTC = Choaking The Chicken
CU = See You
CUL/CYL/CUL8R = See You Later
CWYL = Chat With You Later
CYA = Cover Your Ass