A lie or lying. Used as both a noun or verb. Derived from Alexander Boris De Pfeffel Johnson (at time of writing Prime Minister of the UK) who on record in the House of Commons seemingly can't stop himself lying.
Ah look, there is that Johnson Borising in the House of Commons again.

Yeah, he said he hasn't taken any Russian money which is a complete Boris. I mean he tells so many Borises a day he can't even keep them straight.
by JamesFromTwitter March 5, 2022
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Used interchangeably with the majority of negative and derogatory words. Particularly synonymous with failure, ineptitude, general uselessness and being shit.
"You've managed to completely Boris that up."
"What an absolute pile of Boris."
by Waragainstsleep September 13, 2020
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Awesome Japanese experimental metal band that also cross over into stoner rock, psychedelia, sludge metal, groove metal, noise rock, and drone metal. They're a three-piece band but are able to create some pretty sick sounds and also enthrall the listener with an atmosphere of ambient, transcendental noise.

Oh! And they're named after The Melvins song Boris.
My friend saw Boris in concert last night, and came back with his mind blown by how amazing they were.
by MlleRCCola April 21, 2012
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CoRN🌽 c0rn CoRN 🌽corn corn🌽 CoRN corn🌽 corn corn🌽 c0rn corn coRn🌽 corn 🌽corN corn ccorn🌽 corn corn corn🌽 corn corn🌽 cat corn

Likes corn
100% corn
-BORIS LIKES CORN Do you like CORN???

SAY YES OR YOU WILL DIE IN YOUR SLEAP FROM SUFFOCATION IN CORN
by CoRN_cOrN 420 October 11, 2019
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Often confused with a fat old balding russian man, but is actually the coolest and most dashing (; armenian guy ever! He's jams out on his guitar for hours and leaves the girls swooning. He'll never give up on his friends and stays up 'til the crack of dawn talking to them. Everyone wants a best friend  like Boris!    
Mom: who you texting? 
Me: Boris
Mom: oh...say hi for me! 
Me: *texting* my mom says hi 
Boris' reply: :O haha...tell her I say hi back! (-:
The End 
by Artsy.Pearl August 24, 2011
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A person who is prone to making ridiculously stupid mistakes that is laughable to an ordinary human.
"That Ramwell sure is a Boris"
"man, i'm so sorry for borising out at your grandfathers funeral"
by stoz June 26, 2006
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A verb, noun and adjective usable in past, current and future tense. Usually used to express anger, frustration, hilarity or violence. Also occasionally a persons name. Not so different to the word "fuck" in it's many uses. The term is commonly used numerous times in the one phrase, where it may represent many different things or actions
1. "Borrrisss!!!!"

2. "Boris Borised it!"

3. "Where's Boris?" "Boris went full Boris." "What? Boris Borised it?" "Yep Boris Borised it and went full Boris." "BORRRISSS!!"

4. "I wish these fucking lights would change." "Borrrisss!"
by EoN October 10, 2012
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