Photo taken from-: Google
Tongue print is a unique features of human body. Similar to fingerprints everyone has a unique tongue print. Considering the tongue potential as an identification verification tool, Chinese researchers have been working on 3D tongue image database. Like the heart, the tongue is always working. When a person eats, it helps in mixing process of foods. When a person speak, it blinds and contorts itself to from letters. It also contains linguianal tonsils to filter out germs.
Cool post. Learned a strange new fact today. Thanks.
You are not going to catch me licking an access panel anytime soon though, lol.