When someone is the best at everything they do
Wow mate you are such an Oliver Cooney
It is a person who is above average in most things however they are not above average in all things such as:
Not breaking phones
You my guy you are whta you just did was kinda a tanvy move ya know
When someone is so funny because they are such a donut
Mate I am such an Oliver Cooney and you are such a William Townend