Top Definition
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.
by Arsonist100 November 25, 2009

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