Jersey Shore's Ronnie pleads not guilty

It seems all the Jersey Shore cast do is get into brawls…

But Roidman Ronnie from the show has pleaded NOT guilty to an aggravated assault charge in New Jersey.

The charge stems from a September 2009 fight outside a Seaside Heights nightclub where Ronnie knocked another man unconscious.

The punch up was shown during an episode of the popular MTV reality show's first season.

The alleged victim, 26-year-old Stephen Izzo has also filed a lawsuit against MTV and the show's producers.

The charge carries a potential prison term of up to five years… he’s due back in court March 7.