Middle finger (gesture)

The middle finger (also known as the bird) is a form of expression where a person raises up only the middle finger of his hand while closing the other four fingers, with the gesture used to express disapproval toward another person. This gesture is considered obscene and offensive in various cultures.

Policy
While this gesture can be mentioned in stories of an adult nature, visual depictions of this gesture are forbidden.

Empath: The Luckiest Smurf stories
In the EMPATH: The Luckiest Smurf story series, the middle finger gesture is occasionally used by the Smurfs to express displeasure toward a Smurf that they don't like. Papa Smurf finds this gesture obscene and forbids his little Smurfs to use it.