The acronym that should be used when people irresponsibly use lol(laughing out loud) even when they're clearly not laughing out loud. They are limh'ing.
Coined by 4EverBleedBlue, on the SBNation blog; OBNUG.com
Dude2: OMG! LIMH!
Limh stands for "laughing in my head", and is a more a accurate description of whats acctually happening.