wingnut - nickname

[lukre]

What type of person would get a nickname Wingnut?
(He is an Australian.)

I've found that it could be a nickname for "a person with large sticky out ears", but it's not the case here. :-/

[susiedqq]

Does it have to do with a sports team? or job that he does?

[lukre]

He is a character in an Australian TV-series. He is a policeman and his fellow policemen call him that.
It is never explained why. :-/

[lukre]

Does anyone know?
Could it be an eccentric person?

Thank you!!

[Charlie Bernstein]

This is a wing-nut:

http://uppitynegronetwork.files.word...t-wing-nut.jpg

In slang, a wing-nut is a lunatic, a screwball, a crazy, a nut, a kook, a crackpot, a nut-case:

http://www.geocities.com/Heartland/L...46/lunatic.jpg

[Charlie Bernstein]

Does anyone knows?
Could it be an eccentric person?

Thank you!!

PS - Yes.