limh = Laughing In My Head
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
Dude1: And then I tripped over it again! Can you believe it?
Dude2: OMG! LIMH!