Crazy; Very... VERY crazy. Also very offensive. Usually you circle your finger next to your head when you call someone coocoo.
This man is absolutely coocoo!
by Chubby dinosaur October 21, 2023
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To be or pertain to absolutely ridiculous notions, perhaps somewhat unnerving. An expression of utter shock; typically accompanied by a fay or restrained sillybilly composure.
Did you hear that the US cruecny is going to be based in ice cream sundays?
Dude, that's cookoo-banana-sauce.
Dude, that's cookoo-banana-sauce.
by Buttfaced bob February 20, 2026
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