When you don’t know if you will shit or fart as you place your ass onto the porcelain throne.
After a certain age, it’s always a mystery squat.
by Dr Bunnygirl August 3, 2019
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Term used in the joint for all meat products. It tasted like shit and no one knew just exactly what animal(s) it came from.
What we havin' for breakfast homes? Shit on a shingle with some mystery meat.
by thesanitycruzer July 16, 2012
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The act of urinating in complete darkness while in a bathroom, attempting to locate the toilet or disregarding it completely.

The next time your in the mall, picking up your dad from jail, or at loved one's home enter the bathroom and shut off the lights. Unzip and let it go. That's a mystery piss! You did it!
I took a mystery piss in the RCC bathroom today. The janitor is gonna be so pissed!
by PISSFACELARRY April 6, 2011
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an unlabled bootleg DVD. usually colored porcelain white with a blue underside.
1: hey man, i got that new movie! i'm surprised a mystery disk could have such good quality!

2: ooh! a mystery disk! let's pop it in and hope it's not guy-on-guy porn.
by Sgt. Token March 31, 2008
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One of two secret bosses from the PSP game Kingdom Hearts: Birth by Sleep.

The Mysterious Figure fights with two glowing blades, similar in design and function to those of Xemnas. Alongside his regular attacks, the Mysterious Figure can also freeze and rewind time, make clones of himself, and cast several high level spells, such as Mega Flare and Meteor. The boss's most lethal attack is a jumping "lasso" move, which not only does significant damage, but almost always leaves the player open to a second, fatal hit immediately afterward. These attacks, combined with the Mysterious Figure's high speed and resilience, allow him to officially outclass Sephiroth as the hardest boss in the Kingdom Hearts series, and possibly the hardest in all of gaming history.

Those who can defeat the Mysterious Figure on the highest difficulty with all players will earn the right to call themselves a hardcore gamer.
Johnathan: Come on, come on, only 1 health bar left! I've got you now, you bastard, I've got you-

Mysterious Figure: (destroys player with Mega Flare)

Johnathan: That's...not...fair. WHY IS THIS BOSS SO F#@%ING CHEAP!!!
by tikiterror November 28, 2011
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A prolonged and unexplained silence in a coversation, esp via instant messaging, following a question in which the user wants to DODGE.
James: Hey do you want to volunteer with us? You have to start at 8am.
Jon: Hmm (Mysterious AFK session: 30minutes)
James: WTF? answer
by Very Angry Person May 26, 2010
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When a mystery seems to easy to the writer adds in a character messing with the case in order to extend the plot
"This was an open and shut case if they hadn't made it a Misty Mystery"
by Voncreep February 28, 2021
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