The other morning whilst driving, I coughed, and a small bead of mucus flew and landed on the center of my steering wheel. Not knowing what to do, I just left it there for later removal. The bead resembled a small bead of hot glue, in color, opaqueness, and shape.
The day went by, and I was expecting the mucus to dry and shrivel in size. It didn't. At the end of the day, I went to remove mucus bead with my fingernail, expecting it to still be mushy, as it had not shrunk in size (at all). But much to my surprise, it popped off, was hard, and resembled VERY MUCH a bead of cooled hot glue, in texture, color, opaqueness, and pliability (i.e. was bendable with plasticity), and truly seemed exactly like a piece of plastic - weird, eh???