Top Definition
A sexually confused teen who has anal sex with men but claims to be heterosexual.
78% of the members of the United States Army are classified as mq19.
by The Philosopher April 12, 2007
1 more definition
8 Words related to mq19
(n) A common term for an internet douchebag. Normally, he is a person that claims to be gay for a long period of time. Then, he dies. Oh, and then he comes back non gay anymore.
Wow, that dude is such an MQ19. He was gay last week. What a fag.
by DaSpanksters April 12, 2007

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