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

NOT to be mistaken with cool, it is the Exact opposite, a coo is a fat, diabetic, obese, MAN in denial of his own genger, that think they are a woman, has a unatrual lust for hot pockets.
by Cole the OG September 25, 2023

by Yuri_Dopted December 29, 2019

A vile, obnoxious noise coming from the guy in the cube next to me who is talking to his 3-month old on the phone. For fuck's sake! I'm trying to work! The kid is THREE MONTHS OLD!
by Notcha November 12, 2004

The sound that some of the biggest "smaller" birds make, better known as pigeons. Usually hanging around parks and and within downtown areas of large cities, these pigeons make a characteristic "cooing" sound that no other birds really have.
by Mike Rotch May 13, 2005

by Kat Adler December 07, 2011
