It's been about 12 years since I've done any serious riding so I've noticed many different styles of waving to fellow cyclists.
"Back in the day", the most common wave was just a simple lift of a few fingers of the left hand or maybe all four fingers. Now it's pointing out to the side as a wave or extending the hand.
A few waves have humored me and kept me chuckling for a few miles. Here's the top three.
3). Mr "Harley poser" is decked out in his black dew rag, black leather vest & black leather caps. He's heading towards me with his left hand on his hip. He maintains his pose, but lifts a single finger to acknowledge me.
2) Scooter boy in his brand new red scooter with red half helmet. As I turn left in front of him ( he's stopped at a stop sign ) He waves frantically at me.
1) Guy's following a pickup while going around a twisty, uphill section. I guess he wanted to wave but was too busy holding onto the bars so he lifted his left leg to wave
Jeff