mq19 

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.

mq19 by The Philosopher April 20, 2007

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.

mq19 by DaSpanksters April 20, 2007