This hyphonated phrase is the contraction of "Bad Boys Know you suck laugh out loud" It is used to insult badies and n00bs by old fags. It may also be a contractions of

"Bitching Bad Kid you suck laugh out loud"
As to if the lol is a predicate object, as in telling you to suck a lol, or just an attached phrase, we'll never know.
Novice - "My crit chance sucks and I can't get moar armor"
Old WoW Fag - "BBKusuklol" *logs*
Novice - "Fuck..."
by TheAnonymousComedy February 16, 2011
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