A mysterial is a mystery brake pad material of unknown quality, origin, performance, degradation or composition offered by a brake pad manufacturer for which no fucks are given as they should be focusing on a reliable supply of their popular core product offering.
Today I received a phone call from a manufacturer offering a new mysterial when I can't even get a supply of the popular materials.
by qfm August 19, 2017
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Someone or something that is slightly fascinating due to strangeness, being unusual and/or due to a lack of familiarity.
Outer Space is a very mysterious place.
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Guy that usually walks around with his hands in his pockets. He is the owner of multiple v-necks he wears on a daily basis. He is boyishly good looking. There is also a high probability that he smokes cigarettes and plays guitar, but for some reason does not use his musical ability to draw women closer to him. You will more than likely spend your entire life wondering what made that person so interesting, even though you knew nothing about him.

girl in coffee house: Man..I wonder who that guy was who performing tonight..I tried to talk to him before he left but he was gone before I could get to him...what a mysterious character.
by Guy with a v-neck June 19, 2008
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Nickname for a beautiful, awesome girl who lives really close to you and whom you should have known for a long time but you've only met recently and she rocks your world.
Dude, have you met Mystery _____? How did we not know her all year??
by lillampy September 16, 2012
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the best person you will ever meet. she's amazing to have as a girlfriend and she has amazing eyes.
god i wish to see a mysteri one day
by myst1311 December 1, 2016
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1) An object of romantic or sexual interest. Doesn't need to be only a hard-to-reach attraction--can also be a boyfriend/girlfriend. Usually, a mystery is a boy when referred to in a group of girls.
2) A euphemism for just about anything.
1) Girl 1: How's your mystery, love?
Girl 2: Oh, just spiffy. We were mackin' yesterday.
Girl 1: I'm totally jellin'... I wish I had a mystery.

2) Oh, fuck! I just stepped in some mystery!
by brankie February 22, 2005
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certain type of cult activity in ancient greek, it was well guarded secret, cult members committed rituals and drank several drinks (wine),and likely mushroom and plant extracts like junkies nowadays and they saw interesting hallucinations about their god dionysos.
Dionysos mystery and demeter mystery were kept in secret. Who broke the silence oath, had to die.
by ptk January 13, 2004
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