Define Kmsl Meaning

Kmsl

Lululemon - Hey remember last night when I put the popcorn on for 20 minutes instead of 2?
Tictactoe - KMSL!
By Consolata
Kmsl

I tried to tell the joke but I kept kmsl.
By Pansie
KMSL
Killing My Self Laughing, bit like PMSL.

Guy1:(on msn) writes joke
Guy2:(on msn) KMSL !!!
By Lara