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3.
Nutter (and only Nutter!)

The origin of this slang word is the TV Ad for Dime Bars (now Daim, made by Kraft Foods), a chocolate covered crunchy caramel candy bar, which aired back in 1995.

The Ad featured the British comedian Harry Enfield playing a slobbering retard in a supermarket, filling a shopping trolley FULL of dime bars... he's approached by a well spoken interviewer (Also Harry Enfield), who asks him 'Do you remember your first Dime?'... anyway, the ad finished with the retard exclaiming to his wife:

"That bloke's a nutter... OI, NUTTER!"

Google the phrase 'dime - that blokes a nutter' and you'll be sure to find many videos of this wonderful ad

Many of us will also remember the Armadillos from the second ad they did!
He's a bit of a dime bar...

Oi, Dime Bar!

Lookout! Dime Bar alert! (nutter approaching)
by Dime Bar Rich August 26, 2007
 
1.
And idiot or a stupid person whith no common sense.
person 1:I thought apple was a fruit commpany
person 2:DIMEBAR
by GigaHurTz May 03, 2009
 
2.
"richard you dime bar"

(to the person who wrote the first definition-steve dave- either you are a mallrats fan or have a class name which is it?)
by Elvis July 14, 2003
 
4.
That bloke with the open mouth and saliva making its way to his lapel. He's a right fuckin' Dime Bar he is.
by SteveDave May 14, 2003