A disgruntled Kiwi has been hit with a string of charges after losing his cool over a local TV advert poking fun at the New Zealand accent.

The 44-year-old Griffith man allegedly assaulted and intimidated a WIN television employee on Friday in an apparent payback for the station airing a Knockonwood television advert that features two animated kookaburras speaking with thick New Zealand accents, the Area News reports.

The satirical ad shows the kookaburras saying “sweet as, bro” and “choice, bro” – slang terms often associated with our trans-Tasman neighbours.

The man allegedly abused the furniture store's staff over the phone on Friday before turning up at WIN's Yambil Street offices and demanding to know who authorised the advert.

Police claim he assaulted a male member of the station's advertising staff during the altercation.