Planetalism 

Nationalism on a planetary scale. Planetalism teaches you to take pride in things you have never done, while hating aliens you've never met. Not to be confused with Planetism, which is simply favoritism of your own planet, without regard to alien species.

Don't assume all Earthlings are good and all Mars folk are bad, that's Planetalism.

Planetalism by Digitalwolff June 27, 2022

Rochester Planetarium 

A place where stoner's go in January on Saturday nights to get baked and see a Laser-light show consisting of Pink Floyd, Led Zeppelin, or The Beatles.

Adam, Ryan, and Jun, always go to the Rochester Planetarium every weekend in January to watch the laserlight show while HIGH.

Rochester Planetarium by lakshmi234423 January 9, 2009

Negative Planetariums 

The term for when a woman's breasts are so covered with moles that they resemble two inside-out planetariums with inverted color schemes, the moles of course being the stars and planets.

Eric: So I picked up this girl at the campus bar and brought her back to my dorm, but as soon as i had her shirt off I realized she had moles everywhere. Her tits were like a couple of negative planetariums.

Steve: Did you find the big dipper?

Eric: Well she sure didn't, if you know what I mean.

Negative Planetariums by bladzes October 4, 2009

planetism 

The discrimination against planets.

There are billions of planets in the Milky way, yet we only memorize 8? That is planetism.

We mustn't show planetism against the planets we deem as unimportant for people to learn in school.

planetism by Cas FCS May 19, 2020

planetarium 

The result of ejaculating on a sexual partner with dark skin. Named for the likeness of a clear night sky (or planetarium) with the contrast of droplets of ejaculate on dark skin.

Craig: Hey, African American girlfriend. Remember that time I popped one out on your belly.
Tracy: Yes, Craig. The contrast of your ejaculate on my awesome dark skin reminded me of a planetarium.
Craig: You might say that I gave you a Planetarium.
Tracy: Sure ... I guess you could.

Reginald: Yo, Franz, I heard dat Victoria got a photo of her planetarium up on da Facebook?
Franz: Shhhhiiittt. You mean a photo of dat booty with a bunch of cum all up on da surface of it?
Reginald: Yes.

Omar: Hey, Becky, did you hear that the superhero Captain Planitarium saved an entire city this morning?
Becky: Oh, really? How did he do that?
Omar: He ejaculated on everyone!

planetarium by richardblack3 April 24, 2014

Planetanium

The materials from any planet containing any for of living fire or lifeable Burnaby materials that can sustain life.

Previously proven to be on earth and Mars so far.

Planetanium is any burnable materials.

Planetanium by Cody5050 December 21, 2022

Planetism

Contraction of Plane Spotting and Autism. A humorous, respectful self diagnosis of avid aircraft photographers who upload to social media and organize nerdy meetups at airports.

I'm flying to Los Angeles for a planetism meetup with friends.

Planetism by A320Scott March 20, 2026