After a long night of heavy drinking, you become beligerent & ridiculous, often doing things that your friends will forever remind you of, every time you all get bombed.
It's your twenty-fifth birthday, you think we're gonna see a little unstable steve tonight?
by funnieb0ne November 10, 2007
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n, Unstable Mable is the type of person who is a complete fucking psycho. An absolute fruit loop who is usually a manipulative liar & an attention seeker. They love nothing more than creating a bit of drama.
Damion wrecked the house cause he was an Unstable Mable.

Unstable Mable fell off the table.
by The Fairy Sesh Mother August 13, 2022
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When you want to be alone and exclude yourself from any and all social interaction because of mood, emotional reasons, or to have time to think.
“Hey Greg want to hang out with the gang?”
“Sorry Josh, I’m socially unstable right now, maybe tomorrow
by Gringle April 19, 2020
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n, noun describing a complete fucking fruit loop, someone who is a psycho, a total knob jockey.
Damion was an Unstable Mable, he wrecked the house & went psycho again
by The Fairy Sesh Mother August 13, 2022
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(1) Either used for someone who's mentally unstable, or as (2) a word thrown around to be used for insulting, name calling, so on, so forth.
1. ) Person A, "My god... they're mentally fucking unstable! Who's do such a thing?"

2. ) Person B, "no lol hahahahahahaha my sister is mentally unstable ashshhshshsahahsh she so craaaizy ahahahahahahahahh"
by Toasterish March 30, 2022
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A person or politician who ideas are outside the political mainstream while insisting that their political views or agenda are actual the opposite.

A Unstable Genius is also noted to be prude, arrogant, egotistical, and willingly naive in an effort to protect their pride from being damaged should someone else prove them wrong on any issue.
I have Great Ideas, the Best ideas, boasted the Unstable Genius.
by Libertatis January 13, 2019
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ANY female.
Dang! That's one hot unstable creature.

Dude, get off the phone with that unstable creature; it's your turn to throw for beer pong!
by ChiliPepperr August 29, 2009
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