a term used to describe a male who presents stellar wit and persona but is ugly, fat, or in general - undesirable for sex. They usually end up in the "friend zone."
The origin is a song called "Mr. Personality" by 20 Fingers. A pseudo one-hit wonder.

CHORUS:
they call you mr personality because you're so ugly
they call you mr personality because you're so ugly
you're so ugly
mr personality, you're so ugly
mr personality, you're so ugly
mr personality, you're so ugly

when i look at you i go outta my mind,
its like im lookin at someones behind.
you make the children scream and babys cry,
with your crusty teeth and your bloodshot eyes.
you're so ugly, your dad hadda tie a porkchop around your neck just to get the dog to play witcha
ooh thats ugly.

by Drew Down February 27, 2008
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When you are dumb-dumb, and are devoid of personality
Instead of picking up all of the trash scattered around his property, Mr. Personality sprayed it all with a hose, like a real yutz.
by Ll@magurl123 April 25, 2021
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It means it makes you laugh at your own jokes.
Boy: What did the dog say to the camel?
Girl: What?
Boy: rough!
Boys mind: What do you think of that mr person number 2?
mr person number 2: aaah oooh eeee aaah
Boy: HAHAHAHAHHAHAHA
Girl: Thats not funny.

by 7778 April 29, 2008
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A dude, who is a person who is guy, who is a man, who is a mister who likes to upload videos about the jinkis binkus flood
Guy2 :Woah its mr dude person
Guy 56: hes probably here to talk.to us about the jinkus crinkis flood
by Mr Fuckeroni man February 26, 2022
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