Oh good! That is a question you can answer. A question you have been answering for all the humans. And you are almost sure this is a human, even though it also looks somewhat like an ambulating pile of drapery. "It is, uh, a recuperacoon, which is, what trolls use, for sleeping in." You remember something important. "But one of the other humans, said that, it was rude to let people see it, so, I am sorry."