Top Definition
The state a child or young person adopts upon receiving extraordinary news or is simply elated.
She received news that her best friend was going to be in town for the whole week and without warning just went coo coo bonko but that was to be expected from an 8 year old...
by Jamfetto December 22, 2008
5 Words related to coo coo bonko

Free Daily Email

Type your email address below to get our free Urban Word of the Day every morning!

Emails are sent from daily@urbandictionary.com. We'll never spam you.

×