I like to acknowledge other head shavers when I go somewhere. Usually the bald guy head nod, but with younger guys, I try to give them a compliment. Maybe it helps their confidence.
Last Sunday at a car show, I was chatting with a stranger when he brought up he lost all his hair when going through chemo years ago. He said he liked it so much he has kept it shaved ever since. He had no clue I had a shaved head too, until I took off my hat. We had a nice conversation about our shaving routines, and both agreed how great it is to rock a baldie haircut!