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3.
1) Laughing like a blackman - when laughing out loud like a black person would ( ho ho ho )

2) Also can be added to such things as ROFLLAB, meaning roling on the floor laughing like a blackman
*someone tells a funny joke*
LLAB
by Mr.Blackman March 09, 2005
 
1.
Acronym for 'Looking Like a Bitch'
Man, Nick Vasco is really llab!!! Some things never change!!!
by Bawse69 September 08, 2011
 
2.
IM talk for Laughing Like A Bitch
omg after that joke i was LLAB
by Dustin Ryan November 27, 2006