It really doesn’t matter what I was dreaming about while I was sleeping. What matters is that during the dream, I was brushing my teeth. I could even taste the toothpaste in my dream, it was that realistic. I don’t think I recall ever tasting anything in a dream before.
Still, it was a little too real when I leaned over the sink (in the dream) to spit. Because I spit all over my pillow for real.