Onii-Chan

Means sister or brother.

Kotomi: Nuu Onii-Chan

by corakc November 11, 2009

Onii- Chan

to keep it short: fuck buddy

Ara Ara~ Onii- Chan. You're so big

by definetlygoingtohell February 4, 2021

Onii-chan

A word you usually use in bed ;)

Onii-chan...faster ;)

by PlateOfTakoyaki January 22, 2021

Onii-Chan

Alabaman incest but Japanese

At least onii-chan costs 25 dollars, Sike its free

by Lejiboy May 13, 2022

Wet Onii-chan

Fucker who posts lolicon shit on manganelo. The Justin Y of mangas.

I saw another wet onii-chan post on the new isekai manga

by gaylax October 13, 2021

Onii-chan daisuki

The phrase that welcomes you in the world of hentai.

Sora: Onii-chan daisuki! Be with me forever, onegai?
Haru: Ahhh Sora, that's incest.

by Vagini May 17, 2018

Onii chan tuesdays

This is when onii chan is sad because it isnt wednesday yet so now he has to wait a whole day before.

Person 1: "Today is such a good day"
Onii chan: "No today sucks because it is Onii Chan Tuesdays"

by Dada_bunkins March 2, 2022