Coo is when you have very big pp energy. It’s like cool excepts better. The effect of the word is increased if your name starts with an L.

When some little bitchboy is acting like a little tiny pee pee poo poo baby and messing up the group plans.

A way to describe yourself as being incredibly awesome.

A shortened more lazy version of the word "cool". Used when it takes too much effort to pronounce the "l".

A slightly shortened version of "cool"
used by only the cooest people, coo is the best way to describe something that is completely awesome.

1. Coo (Verb) - A complete state of relaxation and tranquility often aided by the use of marijuana.

2. Coo(ing)(Verb) - to be in the state of "coo"

3. Coo(ed) (Verb) - When coo is broken by inconsiderate fucks, due to the lack of understanding and appreciation by "non-cooers"

Cool.