Somehow LMAO has gone from "Laughing My Ass Off" to a shorthand way of saying "Wow everything is so overwhelming and I just want to die."

'lmao' is an Internet slang, meaning laughing my ass off. It is not considered an 'official' word, and can be associated with the words 'lol' and 'rofl'. It is generally known as a stronger version of 'laughing out loud'

Laughing My Ass Off. Yes, it's as sad as that.

might mean laughing my ass off but most of the times it’s just lick my ass onii-chan

L=Laughing
M=My
A=Ass
O=Off

Could also mean Lick My Ass Out.

Lmao (in text messages) usually stands for laughing my ass off.

Laughing My Ass Off