Stupid, ignorant, in the dark, not having a clue as to what's going on in the world, etc...The term derives from the fact that knowledge is often equated with light for it allows us to "see." The sun is the ultimate source of light and thus the ultimate symbol for knowledge. Anything far from it would by default be something that is also "far" from a source of knowledge in the way that Pluto is far from the sun. There's also the fact that Mickey Mouse's dog Pluto is an idiot.
I can't stand Pluto people. You know, those types that create more problems than they solve.

He's more Pluto than Pluto!

by Hack The Matrix January 9, 2008
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To be in a state of smoking so much Marijuana, that one either falls asleep or is intoxicated to the point of almost incoherence. Origins in Longmeadow, Massachusetts and is a play off of Normandy (see Normandy).
"He was past Normandy man, he was on Pluto..."
by communism117 February 23, 2008
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1. Smallest planet and the farthest from the sun.
2.Mickey's dog.
1. Pluto is very small.
2. "Pluto, boy, go get me the paper."
by Kikaider June 28, 2003
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The only planet in our Solar System.
Promoted for being gargantuan compared to the other worthless rocks.
Person 1: Hey, you hear about Pluto's promotion?
Person 2: Yeah, isn't Pluto just the best thing to happen to this universe?
by asspenis7 November 3, 2019
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Deffffinitely a planet no if ands or buts, you can't change something thats been correct since like forever..don't be ridic
Pluto is a planet, lets not be crazzy
by Bonifa August 28, 2006
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Mickey mouse's dog and a PLANET it's a planet
Pluto is a Planet
by hatearon.com January 24, 2020
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