The one thing that makes John Key stand out from other Prime Ministers in the broadcast era is that he, like no other, is fair game. You can ask him what you like and you'll usually get an answer.

WATCH: John Oliver finds John Key's honest answers

Could you imagine Helen Clark being asked whether she'd ever peed herself in the shower or whether she trims her pubic hair, or indeed whether she'd ever stolen anything? But then again I did ask her once whether she was a lesbian and she fixed her steely blue eyes on mine and without flinching said she'd been happily married for 23 years.

There was no levity in that but with Key there's always light banter, no matter what's fired at him. He was asked in a Radio Hauraki breakfast interview last week all of those personal questions and more, like whether he thought the Virgin Mary was in fact a virgin, and he uncomfortably took them in his stride.

Yes he does let go in the shower, he has nicked something in his past but no he doesn't trim down below, nor does he think Mary was a virgin.

Key insists he didn't know the questions were coming but unlike his predecessors, he answered them anyway.

Four million television viewers heard British chat show host John Oliver this week describing it as the best political interview of all time, a ray of pure, joyful light after a bleak political news week.

Key seemed chuffed by Oliver's description saying if he thought that interview was so good he should come to his weekly post Cabinet pressers which he reckons are a riot. But the closest they've come to the intimate interview was Key once chuckling about having a vasectomy which at the time was seen as altogether too much information.

Oliver's unlikely to take Teflon John up on his invitation though, as little would surprise him from a man he described earlier this year, as more cat than Prime Minister over his ponytail pulling antics, saying he couldn't pass any dangling hair without pawing at it.

And besides Oliver clearly doesn't believe Key when he denied ever sending a dick pic. When you're Prime Minister John Key, Oliver waxed, every pic you send is a dick pic!

So does all this demean the office of Prime Minister? It seems not with the latest poll giving him an approval rating of 40 percent compared with Andrew Little's eight percent, which is where Martin Luther Cunliffe was at his lowest point!