"Trick of Treat" ambigram

You know what ambigrams are, right? They're those cleverly designed words that read the same way upside down as they do rightside up. If you read Dan Brown's book "Angels and Demons" then you've already seen some of John Langdon's work. (Yes, the book's protagonist was named after the artist.) He created this very clever "Trick or Treat" ambigram for British illusionist Derren Brown's latest special. I just might carve it onto a pumpkin