Autocorrect is so annoying, whenever I want to write words like flavour, behaviour, humour it just corrects them to flavor, behavior, humor.

You need to look at the pattern, and see the hint it's trying to give. Your phone is trying to remove u. Technology is trying to take U out. You. It's how it starts. We're looking at the start of the robot wars, and it begins with idle threats from our phones.