Last night I dreamt that I was explaining the metaphysical properties of foam.
I sat on the floor in front of the sofa and demonstrated. I would use a special tool, reminiscent of a cross between a wooden hand citrus juicer and a magic wand. I swirled this tool in a special bowl, made of a special metal that is one molecule thick. It is so thin it can't be seen by the human eye. So, I swirl my special tool in the invisible bowl, and the air reacts to the stick and metal to create alight airy foam that is a bit more dense than a bubble bath, but not nearly as thick or heavy as shaving cream.
I don't remember what the special metaphysical properties of foam were, but I was very earnest about it, and quite convinced.