A tongue, sticking out, with no lips visible. It may have different meanings depending on the context and the user. For example, it may mean a similar faceless expression used by children to provoke each other or by childish adults for the same purpose. It can also be used to mean licking, such as licking a lollipop. On some platforms, it is also used as a meaning of oral sex. Some people use it to create an imaginary competitive situation with an opponent. For example, I've read the text 10 times without a break, and you??
Tongue was approved as part of Unicode 6.0 in 2010 and added to Emoji 1.0 in 2015.
U+1F445
? Tongue