Definitions by Proffessor Waterbreaker

CLSO 

An acronym for Crying-Laughing-So-Outrageously. The final tier in the expression of hilarity chain:
1.) haha
2.) lol
3.) rofl
4.) CLSO

CLSO, the only thing left to say after Lolerskatez and Roflewaffles.

CLSO by Proffessor Waterbreaker October 23, 2009