crack up

(v.) crack up, crack, crock up, break up, collapse (suffer a nervous breakdown)
(v.) crack up (rhapsodize about)
(v.) break up, crack up (laugh unrestrainedly).

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APA	WordNet. (2010). crack up. Retrieved June 19, 2013, from http://smartdefine.org/crack_up/definitions/1267982
Chicago	WordNet. 2010. "crack up" http://smartdefine.org/crack_up/definitions/1267982 (accessed June 19, 2013).
Harvard	WordNet 2010, crack up, Smart Define, viewed 19 June, 2013, <http://smartdefine.org/crack_up/definitions/1267982>.
MLA	WordNet. "crack up" 23 October 2010. Web. 19 June 2013. <http://smartdefine.org/crack_up/definitions/1267982>

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