Laughing My Fucking Ass Off. A term used when you are in tears from laughter. Used mostly on instant messaging.
Ben: I did the stupidest thing last nite, i was running down the street with Alex and I ran straight into a pole, i ran so hard i think i dinted it!
Kyle: U are such an idiot. l.m.f.a.o!
Kyle: U are such an idiot. l.m.f.a.o!
by Jessie_xxx November 20, 2005
Tay:This weekend i've organised all us girls to go to the city for shopping.
Opal:Koolies! Hey can Zoe come?
Tay:Sure thing!
Opal:Koolies. C u then!
Opal:Koolies! Hey can Zoe come?
Tay:Sure thing!
Opal:Koolies. C u then!
by Jessie_xxx November 20, 2005