The only person I ever asked this to was my ex as he is impossible to talk to. He can't argue and can't talk through things, instead he'd just stop talking mid sentence and say nothing so I'd ask what he was thinking in the hope the conversation would go somewhere.
I hated living with him as we never got anything sorted, it just built up resentment.
Why do women ask this question? Everytime they ask they expect something profound from you, and you get a dirty look when you tell them you were wondering if you should order 4star or Dominoes. It's a question I've never heard a bloke ask. Understanding the motivation behind this question could be a real insight into the female psyche. Anyone?
They ask it a lot tbf.
Normally the answer is "I'm imagining coming all over your sisters" but that doesn't go down well normally.
I don't say whatcha thinking, but I do ask what's wrong or are you ok. Himself on the otherhand only starts talking a lot after drink. Do you think he remembers what he said the next day? Not a chance. I've got better at not over analysing what he says when he's drunk. (And accept all declarations of undying love!)