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A person who thinks that a word exists when it actually doesn’t.
John cheats in scrabble all the time by gaslighting everyone into accepting that his tiles spell a real word. What a Yiper!
Yiper by Yankele January 16, 2022
Related Words
A low-tempered Canadian woman whose job is to manage a Minecraft server.
"Have you gotten a chance to tell ypperin about the duplication glitch?"
"No dude, I got banned"
ypperin by Koala Kontrol June 14, 2019

yipeekiyay 

yipeekiyay is a word used for exclaiming ones self satisfaction or ones release of energy through a positive, invigorating manor.
*jumps out of plane saddled on bomb* 'yipeekiyay!!!'
yipeekiyay by Levi godolphin March 29, 2007
A well-respected former player and current commentator for the FGC -- namely Marvel vs. Capcom (mahvel). A real OG.

Notably, a compilation of his MvC2 commentary was uploaded to YouTube in 2007 titled "mahvel baybee!" that coined a number of phrases near and dear to the heart of anyone who loved/loves Marvel vs. Capcom.

e.g. "IT'S MAHVEL BAYBEE!" "Oh he got da mango Sentinel" "Mag-fucking-neto" "Scoops Häagen-Dazs" "Oh he's so Pringles. Where yo curleh mustache at?" etc.

The video is so well-known in the FGC that Capcom themselves made references to it in Marvel vs. Capcom 3. Crazy, right?
Yipes: "I don't mean to be cliché, but... he got dat mango Sentinel."
YipeS by inkball October 25, 2020

Yipes Stripes 

The latest craze!

Any further question youtube "yipes stripes teen-age strangler" and watch the one with the girl singing on the counter.
"Yipes Stripes! Now you got the beat!"
a yelp of joy
Oh awesome! Nik wants to skype with me! Yipee!
yipee by Ivaaa June 24, 2010