Gyuu 

An expression of severe unhappiness, similar to "Oh man" and "Shit". It can only be said in times of great distress.

-"Bro, your dog just got run over, your car just got wrecked, and your girlfriend just cheated on you with your dad!"

-"Gyuu!!!!"

Gyuu by MederiosJohanson October 13, 2010

Gyuunyuu 

Word commonly used to express someone who is "ninja awesome".

"That guy must be a Gyuunyuu.. What a guy.."

Gyuunyuu by Renegade Jesus May 4, 2006

Gyuunyuu 

Japanese for milk.

Not a ninja, nor a ninja rank.

Ninja ranks are as Follows:

Kage
Jounin
Chuunin
Genin

Incorrect use:
That ninja is gyuunyuu.

Correct use:
Gyuunyuu and cookies make japan santa happy.

Gyuunyuu by LOhateVE July 23, 2006

gyuuuh 

Sound effect for when you get poked/pushed gently by someone and you make a "gyuhhhh" sound, or when you see something nice to look at.

Gyuuuh she's so hot lolz.

gyuuuh by Tingle Likes Rupees February 15, 2017

gyuuava 

bulan's favorite; someone that genuinely kind and creative. he cares about you and always makes sure that you are the main character. he always tries to comfort you and makes you happy. you will not regret to meet someone as cool as gyuuava!

if you meet gyuuava, say 'hi' and please be kind to him^^

gyuuava by sya sya February 14, 2022

Gyuuh 

the sound made by a wingull in the emerald/sapphire/ruby

Gyuuh!Gyuuh!

Gyuuh by ender'sg game February 15, 2021