siclmao 

In other words, sitting in chair laughing my ass off. Another form of roflmao only this is used because if you are on the computer, you cannot be rolling on the floor.

Omg that was funny, siclmao.

siclmao by BennyR December 12, 2008

SOCLMAO 

sitting on the chair laughing my ass off

Jolanda: Did you hear what Elek did last night at the party?
Jessica: SOCLMAO

SOCLMAO by bluespacepiglet June 11, 2011