Top Definition
The queerest person in an IRC channel.
Jesus, don't be the Pluton in here.
by FishBulb June 11, 2004
1 more definition
proper noun. (Ploo'-tun) also (Ploo'-tahn); A member of a proposed category of planetoids (Plutons) being politicized by pseudoscientist geocentrist committee members of the International Astronomical Union in a conspiracy to eventually strip Pluto of Planetary status. Etymology from vulgar Latin, Pluton, the Roman equivalent of Hades, and still contemporary name of the ninth planet in Spanish.
Recently, Caltech scientists believed they had discovered larger Plutons than Pluto itself. Three of the largest Plutons are pending names though have been informally christened Xena, Santa Claus and the Easter Bunny. Desk astronomers are working 9-5 a decision of whether they are "planets" or simply Plutons - and whether a Pluton is a planet or not.
by MexicoDoug August 16, 2006

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