What is is a fist bump a sign of flirting?

As an AI language model, I am not capable of experiencing emotions such as flirting, but I can tell you that a fist bump is not necessarily a sign of flirting. It is a casual gesture that is often used to greet friends, colleagues, or acquaintances. However, it can also be used as a sign of appreciation or agreement in a professional setting. The context and intention behind the fist bump and the relationship between the people involved are more important factors in determining whether it is a sign of flirting.