The notion that while there isn't necessarily something wrong with someone/something, the two elements aren't a match.
"Dude, why did y'all break up?"
"Classic Mona Lisa Principle. She was beautiful, mysterious, and intriguing, but (pointing to my brain) didn't match a damn thing in my house."
"Classic Mona Lisa Principle. She was beautiful, mysterious, and intriguing, but (pointing to my brain) didn't match a damn thing in my house."
by Chris "Your Hero" Mock June 10, 2018
Get the Mona Lisa Principlemug. The artful splatter left on the back of the toilet bowl from explosive diarrhea. Almost like a fecal Rorschach test.
Man, that girl from the party last night got the green apple splatters and left a wicked mona lisa in my toilet. It's very impressive, but i wont be calling her back.
by mr.self.destruct December 13, 2022
Get the Mona Lisamug. A “Mona Lisa” is an extremely beautiful girl that is used to break down the defenses of your opposition to ether set them up or for her cause a form of harm to them. Explained in Lil Wayne- Mona Lisa
by King ADG April 8, 2022
Get the Mona Lisamug. Somebody who is popular with un-popular friends, somebody who everyone pays attention too but not their friends or the people their around, they get ignored while Mona Lisa is the center of attention.
Sarah is a Mona Lisa, I’m her best friend and I’m always around her but she’s the most popular person in school, so I get ignored and cast away when she’s talking to other people, it’s like I don’t even exist to them.
by Swallowcatz August 7, 2025
Get the Mona Lisamug. 
When a cleavage looks kind of perky and happy but also a little on the sad any unperky side at the same time.
"Have you seen Emily's breasts? Her tits are like "Wow!" but also kind of "Meh." at the same time... I feel like her cleavage is somehow smiling at me--but also frowning at me! It's like she's got that whole Mona Lisa Cleavage thing going on. You know, like auntie Sara."
by Turtleboy3000 September 19, 2016
Get the Mona Lisa cleavagemug. If you call someone a Mona Lisa-a women but I guess could say to man it would mean that they're not the best looking overall but something about them makes them that way in your mind over anyone else. Meaning they are the best looking.
There were plenty of good looking people in the room but this person in particular captured my attention like the Mona Lisa in a gallery. Something about them was Mona Lisa like over the others I came to know
by Dimitri6923 December 18, 2024
Get the Mona Lisamug.