Here's another example I had in a lucid this morning.

For some reason, I spat up something and passed out after having sex with someone. When I came to, there were all kinds of people, maybe doctors, around me going "Are you OK?".

Here's the interesting part: One said "You're dreaming!" and after he said this, one of the others elbowed him hard and said "SHUT UP!!".

I probably would have lost lucidity if he didn't say that.