That's really hilarious. I've experienced loads of similar things, where it's obvious that on some level you know you're dreaming but you don't fully realise it and become lucid. Sometimes I take risks in dreams and think "I might as well, it's only a dream", yet I'm not lucid. I think it's a good sign, it means you're really close to lucidity, just a little more preparation and you'd have probably become lucid.