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More intense rofl, in the same regards that lmfao is more intense than lmao - Low Fat Rofl Mayo is the more intense version of rofl or roflcopter/roflmayonnaise.

Usually used in reflection of a funny event.
Aww that time Alex got hit in the face with the basketball after he tripped I totally Low Fat Rofl Mayo'd.
by LessOffensive February 11, 2010