Someone who drifts from social group to social group apathetically with no sense of loyalty or identity. Like a social butterfly, but a little more depressing.
Greg went to a house party for 2 hours with the jocks he's sort of friends with and then showed up unannounced at Charlie's house where he played dungeons and dragons with the glee club. Like what even are you doing mate. Planktonic fool
by Fadiastheonlyone September 6, 2016
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A person who bums everything and anything off of people. Also can be said instead of word bum.
hey can i plankton you ?

Dan Hegarty then gave me a stog.
by Mike Chi December 15, 2008
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someone who while claiming to play does not actually participate in extreme frizbee or other games but instead just stands there and only catches it if it goes for them
"dude hugh was such a plankton yesterday during frizbee"

"conor quit being a planton and go for it!"
by Althalus June 3, 2007
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A typical office worker, which usually has certain tasks assigned to them without hopes of getting a promotion or achieving something in his field.
He's just our office plankton, don't mind him...
by Arnonis July 1, 2014
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A name belonging to a semi-known Rust cheater who has cheated on many Icefuse servers (particularly Warden 2x) during late-spring to late-summer of 2020. They're rumors that this person went back onto Icefuse in December 2020 but got banned due to cheating. They're also rumors that he wasn't cheating in Rust (in December), but using a hack for the game "Among Us". This player was in the clans, "gayz", "BO99", "999", "BOPP", "damm", "damn", "ESP", and several others. This player has used the handles, "plankton uchiha", "ploonkton uzumaki", "ez claps ez smacks", "Triple Heady Go To Beddy" (not the original), and several others. This player has bypassed several HWID bans (given by Rust) and several Icefuse bans. He was nearly banned when his online friend (AuraLoL) went against him as a wipe (as a challenge) and gave all the evidence that plankton gave him, unfortunately, plankton was afk at the time of the report being reviewed.
Nick #BeamerSZN: Remember plankton uchiha?
AuraLoL: Fuck you, kid. That's my homie.
by notmyrealname111111 March 5, 2021
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A phrase of (presumably) Russian origin that is used as an offensive description of a regular office worker. The punch comes from the fact that experienced office workers are completely stripped of their personalities and idiosyncrasies, concerned or interested about nothing outside their comfy cubicles, making their appearance similar to that of plankton - mindless and expressionless creatures at the bottom of food chain left at the mercy of those higher up.
14 yo. George: the last thing I want to become when I grow up is office plankton like my parents - they seem miserable and completely powerless. This sucks!
by Black_Quarterback June 12, 2019
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