Boys being shirtless when in public

I hate to see that you are stressing over this. First, I don't think there is anything wrong with him being shirtless most of the time. Two, if he is at someone else's house and the parents do not approve then he should respect that and wear a shirt. Three, I agree it makes sense to bring a shirt, but I don't agree he shoud be required. I go shirtless often in the hot summer, but if am going far I bring a shirt because, then I have one in the event I go somewhere where I'll need a shirt, say to a movie or to get a burger, etc. But he is young and will learn this after he is inconvenienced a few times and has to go back home to get a shirt. Thus, four, I think this problem will resolve itself over time.