2. Acronym for 'Laughing Like A Mental Patient'. Used when laughing occurs where someone laughs uncontrollably to the point their laughter becomes the object of laughing. Such laughing influences others to laugh by laughter alone.
Where "LOL", LMAO", LMFAO", ROTFLMAO, and ROTFLMFAO, leaves off, LLAMP involves others in your laughter regardless of the source.
by Buckeyefanjay July 29, 2011
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