The fan-given nickname for Motoaki Tanigo, who is the CEO of Cover Corporation: a talent agency that manages the virtual YouTuber group Hololive. It is pronounced "yah-goh" and is often written in all-caps.

YAGOO has become the butt of many inside jokes among fans after he claimed that Hololive was an idol group similar to AKB48, when in reality the group mostly consists of cute deranged psychos who smash desks, eat sand, and try to drink each other's piss.
( Comment on a translated clip of a Hololive member literally shaving her pubes on stream ) Every day, YAGOO's idol dream slips further and further out of reach...
by Baconfry December 3, 2020
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A verb describing the act of insulting a Boss or a person of power for financial gain or content
Man, did you see how the manager Yagooed the boss to improve our spirits?
by Jordanthetoeman May 15, 2021
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yagoo
by March 26, 2021
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can be a greeting, an expression of bewilderment, an expression of over excited agreement, or nickname for a friend.
YAGOO! Wats poppin?

friend: you do the hw for today?
me: yagoo? we had hw!?!?

girl: yea sure you can have my numba
me: YAGOOO!

me: hey yagoo, how was your weekend?
girl: haha it was aight how was yours?
by rayrayalldayday February 4, 2010
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