The gesture of bikers extending two fingers down while passing or approaching other bikers is commonly known as the "two-finger wave" or "two-finger salute." This gesture is a form of acknowledgment and camaraderie among motorcyclists.
There are a few theories about the origin and meaning of the two-finger wave, though it's important to note that customs and gestures can vary among different motorcycle communities and regions. Here are a couple of commonly mentioned explanations:
Respect and Recognition: The two-finger wave is often seen as a sign of respect and recognition between bikers. It acknowledges the shared passion for motorcycles and the sense of kinship among riders. It's a way of saying, "Hey, I see you, fellow biker."
Safety and Alertness: Another theory is that the two-finger wave serves a practical purpose related to safety. Motorcyclists rely on visual communication due to the limited use of hand signals while riding. The two-finger wave can be a quick and subtle way of checking in with fellow riders to ensure they are alert and aware of their surroundings.
It's worth noting that motorcycle culture can vary across regions and individual preferences, so the two-finger wave may not be universally practiced or understood in all motorcycle communities. However, in many places, it has become a common gesture of acknowledgment and connection among bikers.