BBM could refer to a Bandwidth Balancing Mechanism.
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When people say to you 'bbm me' It means that on the Blackberry phone, text/ping the person using 'Blackberry Messenger' AKA BBM.so when people say to you bbm me just to talk to them using BBM.
not sorry for the broadcast
blackberry messanger
BWT is short for about Example i've just txt her bwt it
For The Loss
is
What I wore
hmft
When you see txt/IM, that means text or instant message.
black berry massenger