Fonterra, the biggest exporter of milk powder to Sri Lanka, may have a new battle on its hands.
Unionist Richard Reid tweeted a photo of National MP Chris Penk's ute, painted in National livery, with the question, 'does he need this... didn't know that Penk was a hardworking tradesman'.
The response came thick and fast. One tweet stated "I'll see Chris Penk's nice, tidy ute, and raise you Marja Lubeck's ancient campervan!" with a photo of an old campervan in Labour livery with the MP's photo on it.
Those who live in glass houses should not throw stones.