Top Definition
to become overcome with so much laughter that one has to run out of the room. the laugher is usually seen with a fist over there mouth and bumping into people as they make there exit.
Jamal was so overcome by an old episode of 'Martin' that he was last seen doing a runaway laugh into the kitchen.
by P. Heifner May 19, 2008
5 Words related to runaway laugh

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