Pick of the Lot

I went to lunch with a friend. While we were stopped at a light talking about what I don’t remember, suddenly my friend mentioned that one of the guys in the truck behind us was going for the gold. I quickly pulled down the visor to observe who could be doing this. The guy was about 35 years old and was up to his knuckle in prospecting. The prize was quickly retrieved and seemed to be deposited on his pants. I mentioned to my friend that better form would have been if he had rolled and flicked it out of the window.

What is the proper way to dispose of the goods? Is it ok to flick it out of a sun roof?

This guy used his index finger. Is that best? What about the pinky or is that a feminine tool of choice?

Were my friend and I wrong for laughing 'til we hurt?