look up any word, like smh:
 
2.
An acronym used on many African American websites which means "laughing my black ass off."
Various women on the show called, "Flavor of Love" are in love and fighting over Flavor Flav, LMBAO.
by Metaview June 22, 2007
 
1.
laughin my BLACK ass off!!!

also lmmfbao as a variation
ha imma hella lmbao @ this n00b
by Cozykneez January 31, 2006
 
3.
Laughing My Bloody Ass Off
Posh Englishman: Would you like some coffee instead of tea?
Posh Englishwoman: Yeah, sure... *LMBAO*
by notenglishatall April 09, 2011
 
4.
Laughing My Bitchy Ass Off
When I think something is funny it always makes me LMBAO!
by tweets December 17, 2009
 
5.
Laugh My Brown Ass Off - developed in the mid 90's as an Asian counterpart to lmwao. Now used by nerds from varieties of ethnic backgrounds.
white nerd: "LMWAO"
brown nerd: "LMBAO"
 
6.
laughing my bad ass off
Katie: We are such bad asses lmao
Jill: You're right.
Katie: Instead of saying "lmao" I should say "lmbao"
Jill: Laughing my bad ass off!!
by Googlefluff May 04, 2008