Not that specific scenario, but frequently when I wake up too early I'll have intense daydreams that I've actually gotten up and gotten ready and stuff, to the point I think I actually have done all these things until something startles me out of it and I realise I've been lying there comatose for 20 minutes. It's a pain in the ass because even when I actually have the motivation to get up, I end up not doing so because I dream I already have.