Top definition
An Acronym Generally Used By Dum Airheads Who Try To Act Cool When They Dont Actually Know What They're Saying. Stands For : Laughing My Stupid Square Fugly Slutty Hairy Fat Ass Off
boy: *tells a really funny story*
dum airhead: LMSSFSHFAO
boy: Uhm , what'd you just say? do you even know what it means? :S
by MR.PARACHUTE OIL May 10, 2010
Mug icon

The Urban Dictionary Mug

One side has the word, one side has the definition. Microwave and dishwasher safe. Lotsa space for your liquids.

Buy the mug