Verb. to pluto someone or something is to downgrade, demote or remove altogether from a prestigious group or list, Like what was done to the planet of the same name.

When you eat dirt for the first time and leave your family to build a shack in the woods

No longer a planet. It was discovered in the 1930s and in 2006 they finally decide to change everything we learned growing up...im so confused now...

Verb. to be hijacked by a small minority to enact special interest commandments. Thus the planet itself wasn't plutoed -- it's still the same planet it was before 2006; but the International Astronomical Union (IAU) was plutoed by less than 5% of its members to pass a controversial special-interest definition of "planet", and it's been too politically sticky to yet take the organization back from the hijackers. The US and India are also frequently plutoed, according to their citizens.

1. A loner reject planet that the solar system kicked out
2. Mickey Mouse's awesome dog
3. Your mum.

a poor little rock thingy in space that was tricked into thinking it was a planet, when... wham! some mean scientists told it the truth: it was a "dwarf planet" (which is some sick disorder that tiny planets are labeled with). i feel bad for the little guy.

a big ball of methane and nitrogen that was big ballin' as a planet for about 80 years, until the IAU (International Astronomical Union) decided to get all technical and make that little bitch a "dwarf planet." At this point, it's a pretty safe bet that Pluto won't be getting laid anytime soon.