bcum become
bside beside
BAK Back At Keyboard
BBL Be Back Later
BBS Be Back Soon
BF Boyfriend
B be
BCNU be seeing you
BRB be right back
BTDT been there done that
BN been
BHL8 be home late
BBL be back later
B4N bye for now
B4 before
BOL best of luck
BRT be right there
BTW by the way
   
blnd blind
bwd backward
biz business