An abbreviation which takes online chat abbreviations entirely too far. First "lol" was used to relay laughter, then it was promoted to "
rofl" or "lmao" to emphasize something being more than just funny. Then some chatroom junkies combined the latter 2 to create "
roflmao" to emphasize an even higher level of laughter. Sometimes things are so utterly hilarious that "
roflmao" doesn't quiten the degree of humor, so another "f" has to be added.