Building and Housing minister Nick Smith has been ordered out of Parliament after a spat with Assistant Speaker Trevor Mallard.
Dr Smith was taking a Bill through its committee stage today when he made a remark which wasn't picked up by the microphones.
But Mr Mallard, who was sitting next to him, heard it and ordered Dr Smith to apologise.
The minister apologised, but despite that was ordered to leave.
On his way out he said something else that upset Mr Mallard, who sent National's whips out to find him and bring him back.
When he returned, Mr Mallard ordered him to apologise for a comment he had made "indicating bias on behalf of the chair" as he left the debating chamber.
Dr Smith apologised - and was again ordered out.