ROFLHAC 

Literally translated into Rolling On Floor Laughing Hysterically About/At (insert 'c' word here)

Used as a random phrase to signify that you are laughing about something, something that is often random itself.

Started by Seth Davis, in his every day life.

ROFLHAC - Rolling on floor laughing about clowns
ROFLHAC - Rolling on floor laughing at Charlie
ROFLHAC - Rolling on floor laughing about cake.

ROFLHAC by Arsonist100 November 25, 2009

rotflmac 

Rolling On The Floor Laughing Mastrubating And Crying

Yesterday after school i was so bored that i decided to rotflmac

rotflmac by pseudonym April 11, 2005

ROTFLMACOPTERS!!

Rolling On The Lauging My Ass Off HELICOTOPERS!!!!

A derivitive or ROFL , LOL, and other emoticons.

Look up the definition of Toboggan on urban dictionary. You will ROTFLMACOPTERS!! .

ROTFLMACOPTERS!! by Coreyissofakingbadass February 23, 2008

rotflacgu 

Rolled on the floor laughing and couldn't get up.

From a Cheerios ad depicting a bi-racial family:"I saw this ad and didnt give it another thought, but then again. I am a TEA member and therefore must be racist. rotflacgu"

rotflacgu by Schrodinger's Dog June 9, 2013