Again, anything worth writing is worth mailing, but this comment was found on the TNR blog
It's a little known fact there Nohmy, that deer heads in mailboxes were used by the Mesopotamian Aztecs as a way to welcome newcomers to the village. They would say "Macaca," (meaning "friend"), "Welcome to the Real Mesopotamia." This ritual was practiced even by the newcomer speaking to the one who was born on that land.
Of course due to the unusual shape of the Mesopotamian Aztec Deer's esophagus, even if it could speak, it could not pronounce the word macaca. That is exactly what made it ideal for stuffing in mailboxes.