What does SBD mean?
Silent But Deadly
Other definitions of SBD:
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How to use the term SBD:
There are no example uses of SBD at this time. We would greatly appreciate your contribution if you would like to submit your own!
More slang terms:

PFT
Pretty fucking tight

OBS
Obviously

WAK
What A Kiss

CGYOOMH
Can't Get You Out Of My Head