A subsitute for F*ck You, used in the presence of teachers and/or parents or guardians. Also the name of a Chinese man with a very long mustache and an eyeglass.
You slept with my mom?!?! Fuu Man Chuu!

Did you just steal my Algebra II answers?!?! Fuu Man Chuu!!!
by NonAnonymous Ninja August 4, 2010
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Commonly used when speaking on someone claiming to be in the streets or repping an organization when they are faking or false claiming.
Person 1 - “He upping the Rakes on his socials but is never outside”
Person 2 - “Oh yeah he fuu bro, his set not even in his area”

“They all post they sticks online but never carry outside the crib, they fuu”
by GottiMulatti August 11, 2022
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Fuu, also known as fuulton, fuulto, pooton, dripton, bigton, homoton and Lucas Grabeel is a young guy who is reasonably angry. Fuu has a lot of mood swings. And is therefore often bullied with his moodswings and has been assigned different names to his different moods. There's Mad Fuu, probably the most popular of the names since Fuu is always a little sour. Then there's Sad Fuu. This name plays out most when we see Fuu get angry, and then afterwards sad to be bullied. His face therefore makes a strange shape and with open mouth so he looks like someone who would very much like to die. One of his most artistic names is Happy / Goofy Fuu. As it happens really rarely, and you hardly have time to pick up his mood swing as he is so quickly back to being Mad Fuu afterwards. Only one image of this mood has been captured in the story, and it is therefore really artistic as there is only one copy.

You can put any type of emotion infront of "Fuu", as "Fuu" just is a name to annoy pretty much anyone.
Are you a bit Mad Fuu today?
by Valdiiz September 28, 2021
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Someone you are amazed by and want to marry. The love of
Your life
by Jesusijntjemkai November 13, 2019
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A definition can’t define him but he’s one of the realist person you’ll ever meet!
Dad, I want to be Woody Ah Fuu when I grow up”.
by Anonymous Ah Fuu November 23, 2021
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