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!
He's more Pluto than Pluto!
by Hack The Matrix January 14, 2008

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).
by communism117 February 22, 2008

by Kikaider June 27, 2003

The only planet in our Solar System.
Promoted for being gargantuan compared to the other worthless rocks.
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?
Person 2: Yeah, isn't Pluto just the best thing to happen to this universe?
by asspenis7 November 2, 2019

Deffffinitely a planet no if ands or buts, you can't change something thats been correct since like forever..don't be ridic
by Bonifa August 28, 2006

To be demoted in some fashion.
This word comes from the former planet Pluto being demoted from planetary status
This word comes from the former planet Pluto being demoted from planetary status
by alxkq01 January 11, 2007
