POLICE have charged a man with public nuisance and willful exposure after he allegedly "mooned" the Queen during her visit to Brisbane with an Australian flag between the cheeks of his bare backside.

Liam Warriner from Sydney was released on bail this afternoon and is expected to front the Brisbane Magistrates Court on Friday.

Speaking after his release from watchhouse, the 22-year-old said he was unloading shipping containers when his workmates dared him to do it.

"I mooned the Queen," he said.

"Everybody's seen someone's butt, come on. You see it on TV all the time, you see it in movies, it's accepted in PG rated programming these days, but yet it's an offence to the Queen."

Warriner said the Queen waved at him and that's when his pants came down.

But he claimed his genitals were not visible to anyone during his 50m run.

"Not the front at all. There were loads of people there to see the Queen. I wouldn't want all of them seeing (that)," he said.

Warriner said he is also part of the Occupy anti-elite protest movement and had taken part in the protest in Sydney.

"I'd like to say we are the 99 per cent, human need over corporate greed and we won't accept this any longer," he said.