LRLIMH 

Laughing Really Loud in My Head: SMS/Online Jargon used specifically when someone says something thats very amusing but the observer is unable to make any noise. Say, in the exam room, or late at night when the folks/family are asleep:

Uncle Ruckus is SOO dumb! Utah isn't a country starting with the letter 'U' Better not laugh in his face! .....LRLIMH!

LRLIMH by NefariousEmbu December 14, 2011

LRHIMH 

Laughing Really Hard In My Head- what pregnant women do because they can't ROFL (Roll On Floor Laughing) because of how difficult it would be to get off the floor

That is so funny, I am LRHIMH!

LRHIMH by michellemybelle83 December 27, 2012

Lolimh

Well when you say lol do you actually laugh out loud didnt think so =']
so me and my wafles my best buddy made it up mewaning
lolimh
or lolimfh
mean laughing out loud in my fucking head

yo litha your gay lolimh

Lolimh by shaquille, litha January 3, 2008

lolimh

Lot of laughter in my head

geek1 - "i just got rick rolled :("
geek2- "lolimh"

lolimh by darrykun June 19, 2009