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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

licking Doorknobs is illegal on other planets 

When you lick doorknobs that are illegal on other planets, this was featured on the "One Crab's Trash" Episode on the American Cartoon Series Spongebob Squarepants by Stephen Hillenburg.
SpongeBob SquarePants - "Licking doorknobs is illegal on other planets"

Planetside 

Quite possibly the most under-rated game of all time. Due to a clunky interface and system requirements that very few people could meet in May of 2003(When the game was released) it did not catch on as planned.

Those lucky few who knew of this game and had rigs that could run it, got to enjoy the worlds only (and best) MMOFPS... until BFRs came out and ruined the whole fucking game. (Thanks Sony!)

Now relegated to the annals of 'Great Games ruined by arrogant pricks who had the gall to tell the player base what they wanted rather than listening to them' history.

Oh yeah, and if you sucked at PS there was always WoW.
Planetside Noob: OMG the MCG/Jackhammer/Lasher needs a nerf!!1

Everyone else: Go play WoW then ya noob!
Planetside by StabbyTheClown February 26, 2009

Planetes 

1) The english spelling of a Greek word made up of the characters Pi, Lambda, Alpha, Nu , Epsilon, Tau, Epsilon, Sigma. It means "Wanderer" or "Traveler".

2) An extremely well made, and very realistic Sci-Fi anime series that takes place in the year 2075. The story primarily follows the exploits of Hoshino Hachirota, a troubled young man who works as an astronaut for the private space company "Technora Corp", with a team of diverse and interesting characters who's job is to remove dangerous space debris from Earth's orbit. In short, they are space garbage men.

At its core, Planetes is a story of personal conquest.
Planetes is one of the greatest and most inspirational anime series I have ever seen.
Planetes by Icehawk April 13, 2004

PlantSmacker 

The action of raping plant such as an old tree.
Also used: PlantSmacked
PlantSmack
PlantSmacking
Greg: d00d i just plantsmacked that little tree
SUSIE: EWW!!
Greg: what?
SUSIE: THAT'S A KID!!!!
PlantSmacker by eRAF May 13, 2005

Planetside 

The Worlds ONLY MMOFPS Sci-Fi Game, choose your empire and fight in a never ending war. For Land, For Power, For Ever!
OMG Those Fishhead n00bs are fightning us when the Elmo's are taking Amerish!

Mike33 : "Lo m8's,,,we needa saave me,,mum,,,Americh,,gogogo"
Planetside by BeetleJuice101 December 30, 2004