1. Extremely foolish or silly.
2. Crazy; insane.
Source: Answers.com
In the old days people believed that psyhcological disorders were affected or triggered by cycles of the moon. The word looney comes from the word luner meaning moon. The wherewolf legend was based on this theory. many people with Bipolar disorder still claim that moon cycles affect their mood, but this hasn't been proven as a scientific fact yet.
Since you ask about "a" looney, I think you are asking about the Canadian coin and not wanting a definition of the adjective. The Looney is a $1 coin that shows a loon on the reverse. See the related link below for a picture.
The Looney Looney Looney Bugs Bunny Movie was created on 1981-11-20.
Looney Looney Looney Bugs Bunny Movie - 1981 was released on: USA: 20 November 1981 Australia: 6 January 1983
Daffy Duck's in looney tunes! and in the looney tunes show!
Michael Looney's birth name is Michael K. Looney.
Looney Tunes began in 1930 .
Séamus Looney was born in 1950.
Dennis Looney is 6' 2".
Don Looney was born in 1917.
Looney Tunes lothario is PEPELEPEW.
2004.I think that show started the looney toons biography because first is Baby looney toons,then Tiny Toons Adventures,last looney toons
YES i love looney toons!
Michael Looney went by Mickey.