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abbreviation for Mother Goose-Compulsive liar, some one that just tells rediculous bullshit stories that are not true. Some of the most notorious People known for this syndrome include Chris Wrin and George Paul Sheppler.
Pat:Yo Wrin just said he banged this chick in his car.
Dave:He did not, what an MGCl
by Pat March 14, 2004
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