you use this word to be sexier than ur moms house uwu owo
person 1: ur dumb
person 2: top ten onii chans of all time
by daddybunkins March 10, 2022
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Onii-bro

A mix between a gay little faggot and a beaner weaner.
Onii-bro I really want beanie wienie cocky wocky.
by God_Rizard September 20, 2022
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Onii Chan Special

The "Onii Chan Special" is where you find someone with a little girl appearance and nut so hard you destroy their arteries
Person 1: Omg did you hear that rob did the Onii Chan Special to Jessica
Person 2: Yes bro I did
by Barackbarackobama February 06, 2021
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Onii Chan

The Japanese term for Big Brother, however scientists have determined that in the world of anime when Onii Chan is heard there is a 67.2% probability that Big Brother will have become a Sisterf**ker before the end of the series.
Episode 1 - Onii Chan where are you?
Episode 5 - Onii Chan stick it in me *moans*
by Hachio February 19, 2023
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onii

''Oh my God, Onii is such a hoe''
by KarstenEkteMedium January 22, 2019
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Onii

An Unknown Asian name that somehow got into a few American baby name idea books next to issac
How did onii get into baby name books?
by khfjshlj January 08, 2021
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Onii

Onii is The legend who Playes kingdom hearts he own a Keyblade which is magical
Onii is using power
by Onii4cool November 10, 2021
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