just give a little nod
I've been riding for over thirty years, and you name it, i,ve done it all on bikes. I've toured, commuted in all weathers, raced, and now pretty much limit my riding to weekends and when the weather's fair. These days I have an R1 that's a bit special and race leathers, so don't go calling anybody a c*nt (Andyvfr1, who the hell are you to call anyone that?)
In all that time, i have waved or nodded at everything on two wheels, that has been coming towards me, i've overtaken, or has overtaken me, and that includes young guys on scooters(although there's not many of them that has overtaken me!).
They don't always wave back, but hey that wasn't why i did it.
The reason we do it, is we realise that we are a fraternity. Everyone on two wheels realises what we each go through to ride our chosen mount, and the dangers and prejudices that we face. The nod just acknowledges that.
So my advice, is try to make the world a little bit better and friendlier, just give a little nod or a wave, it wont hurt you, and it might just put a little smile on the other persons face.
Enjoy the ride.