Still, Key might well have woken up in a cold sweat yesterday morning. With Bill English in Tonga, Brownlee - National's No 3 - was suddenly Acting Prime Minister. It might be only for a day. But would the power go to his head? Which friend of New Zealand would he pick on next?
Key need not have worried. Brownlee arrived at National's weekly caucus meeting promising peace in our time and armed only with a Nokia cellphone - "a little bit of Finland" which was with him all the time.
He did not so much apologise for what he had said as apologise for people not seeing the humour in it. He did not use the Finnish word for satire - "karikatyyri". Not only because it is unpronounceable.
Judging from the crass attack on Brownlee's size and weight by a Finnish talk show host, satire also seems to be a rather scarce commodity in a country whose idea of a good time is plunging into holes cut in the ice of frozen rivers.
Holding the fort for Key during afternoon question time in Parliament, Brownlee played equally safe.
He brushed aside a string of questions about the "teapot tape" saga by taking the line that Key had at the time been acting in his capacity as leader of the National Party rather than as Prime Minister. Because the matter did not involve ministerial responsibility, he was not obliged to answer questions on Key's behalf on the subject. So there.
His argument was somewhat undermined by Key's statement the day before welcoming the police decision not to prosecute the freelance cameraman responsible for the taping. Key made that statement under the title of "prime minister" and it was distributed on ministerial letterhead.
Never mind. Brownlee had done enough to stonewall Opposition parties to satisfy his boss. Just don't pencil him in as being in the running for the Foreign Affairs portfolio the next time Key reshuffles his Cabinet.