While most cultures find it rude, Tibetans traditionally stick out their tongues to show they aren't evil. It's a way of saying, "Look, my tongue isn't black, so I'm not a demon!"
In many parts of the world, sticking your tongue out at someone might get you a scolding. But in the high plateaus of Tibet, this unusual gesture is rooted in deep history and absolute politeness.
The story begins in the 9th century with a cruel Tibetan king named Lang Darma. Legend says he was so evil that he had a black tongue. He was eventually assassinated, but many Tibetans feared he might be reincarnated as a regular human to cause more trouble.
To put people at ease, Tibetans started sticking out their tongues when meeting strangers.
Today, you won't see every person in Lhasa sticking their tongue out. It has become a rarer tradition, mostly practiced by older generations or in remote villages as a sign of deep respect. It is also a way to show that your mind is clear and your speech is pure.
Sticking out the tongue in Tibet is a beautiful example of how a dark legend turned into a symbol of trust. It's a physical "identity check" that says: "I come in peace, and my soul is as clear as my tongue is pink."