It gives me goosebumps that this method works with others. I thought it to be very idiosyncratic...but it seems not? Either way, I'm glad it could help!
Our brains are very weird, but there's a lot of common weirdness. There's a pretty wide range of common 'weird dreams', for example driving from the backseat, mandatory test or you'll be ungraduated from high school where you haven't been in 10+ years, various flying/falling, the tetris effect, etc.