After noting that it (the fluff, not the snot) is roughly the same consistency and texture as the throw-blankets you can buy in Mexico, SweetiePie and I have determined that it must be a collective. Humans actually excrete the fluff, much like silkworms but without all the boiling, and in their sleep, little men come along and harvest it from various belly buttons and then export it to Mexico to make blankets. Duh.....