I only had one trick-or-treater this year, and that's one more than I've had the past several years. As it turns out, the one I had was an adult and apparently some sort of scam artist, and a neighbor called the police on him and sent out an email warning to the neighbors. Spooky stuff on Halloween, but I wasn't scared of him.
On an unrelated note (or is it?), the Dalai Lama once said, "If we lack inner discipline and we let all the emotions that go through our heads come out, on the pretext that they must be expressed, we will reach a point of considerable excess and may even have difficulty in respecting the laws of our country. Human emotions have no limits, and the strength of negative emotions is infinite."