Someone that always says a truth that doesnt have ass where to sit...
Me: Hey when you was in the USA what you used to do for living???
Mythomaniac: I was a Lieutenant commander in the navy...
Me: for how long?
Mythomaniac: 16 years
Me: Really? wich naval academy did you went???
Mythomaniac: None...i was a recruit
Me: ok kool, thats interesting...
by Sheikhg February 14, 2014
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A person with a pathological disposition to lying, who does so even when there is no reason to.
Donald Trump is a mythomaniac.
by Aunt Tifa Lockhart May 14, 2020
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