Today, as I was driving back and forth and forth and back in the tractor, I was thinking about the different ways I wave to people. If I don't know the person I'm waving to, or at, I usually just lift the index finger off of the steering wheel. Sometimes, if I'm being ornery, I'll give them the gun. You know what I mean. In the greater Worms, NE area, though, I usually know who I'm waving at. Would you like to learn how to wave to other neighborhood farmers Ben Peters style?
Raise your left hand. Shape it so that looking at it, it resembles the letter "L". Next, by rotating the wrist, point it towards the person you are waving at. It now resembles a gun. Bring it back to the "L" position. Go back to the gun. Do this a few times, and remember, do it in a rapid motion. Slo-mo wouldn't work so well.
Don't forget to ice the wrist after practicing. It takes time to build up the endurance and strength it takes to wave like this on a consistent basis. I've been doing this all my life. I'm a professional.