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When you feel the need to express a greeting with a "Blam yo" or alternative comment with a "Blam in yo face" used to enhance a mockery of someone or a shameful comment.
You bust through a door into a party or gig and you shout "Blam yo" and now you are known to be present!!

You caught you best mate shaggin your Girl Friend... thats a major "Blam in yo Face"

Commonly used in da Dirty Souf Syde by DnB or Hip Hop musicians and fans.
by Paul S W January 14, 2007
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