It seems Siri doesn't appreciate being confused with the competition - and that the boffins at Apple have a sense of humour...
When you address Apple's intelligent personal assistant as 'OK Google', the response is brilliantly passive aggressive.
Tech journalist Danny Sullivan discovered as much with his Apple Watch:
https://twitter.com/dannysullivan/status/592911654746193922
Luke Dormehl of
Cult of Mac experienced a similarly unimpressed response when he greeted his iPhone 6 with "Hi Cortana!" to which came the terse reply: "I think you’ve got the wrong assistant."
Well played Apple. And of course Google...I mean
Siri.