Said as it is spelled ( e.g. Raw-full) not as an acronym* ( e.g. R-O-F-L). Means that something is so explodingly funny, that you do not stop laughing for at least thirty seconds.
*Comes from the acronym ROFL meaning Rolling On Floor Laughing
*Comes from the acronym ROFL meaning Rolling On Floor Laughing
by Al Kruse June 17, 2007