An excuse for a whole bunch of astronomers to argue a lot and author new or updated books about Astronomy.
Q: How many planets are there?

A1: This week, last week, or next week?

A2: Nine; we've known that for years. No, other Pluto-like objects are planets too, so there are twelve. No, Pluto-like objects are not planets, so there are only eight.

Afterthought: Mercury isn't much bigger; can't we disqualify it too?
by Downstrike September 12, 2006
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noun: meaning "demotion"; related to the verb "plutoed" which means "demoted".
His performance was way down, but he didn't get demoted, I think he barely dodged a pluto.
by ScalRonnie September 04, 2007
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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 27, 2003
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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 27, 2006
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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 09, 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 22, 2008
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1. A giant sno-cone floating in space.
2. That damn dog I wanna kill.
Here Pluto. Hat this cartoonish looking dog food that looks like cat shit. I swear it's not poisoned with Arsenic!
by Human July 29, 2003
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