Doohan fined for strip club headbutt.

Former five times 500cc World Champion Mick Doohan has been fined $2500 AD after headbutting a bouncer at a Darwin strip club in his native Australia.

Prosecutor Grant Kennedy told the court Doohan was asked to leave the Honeypot club due to his state of intoxication after he began to remove his clothes. Doohan refused to leave and, when a bouncer held his arms from behind, swung his head backwards - striking the bouncer in the mouth and causing minor injuries.

The 41-year-old, who told police he couldn't remember the incident, was later charged with assault and failing to leave a licensed premises. Doohan pleaded guilty to both charges, with his lawyer stating that the incident was completely out of character. Doohan's lawyer apologised to the security guard, police and court authorities on his behalf.

"You, Mr Doohan, are one of our Australian heroes, a legend, a shining example of success, courage and achievement - a man a lot of young men aspire to follow," the Daily Telegraph reports magistrate Greg Cavanagh as telling Doohan, while he stood in court awaiting sentence.

"You have besmirched your reputation in a way that saddens us all.

"We expect our heroes to be and remain flawless, and when they reveal themselves to have all the weaknesses and faults of mere mortals, it rather upsets us."

Despite adding that Doohan had set an "awful" example to young men who considered him a hero, Cavanagh took into account his early guilty plea, good character, age and civic-mindedness and declined to record a conviction against the former Honda rider.

Doohan refused to comment as he left the court.