Husband walking in his boxer briefs

Yeah, it’s hot out but still find this weird. My husband went out to take care of some minor stuff in the backyard with only his boxer briefs. And when I saw him I said he should put something on, because of the neighbors. He said, he doesn’t care, if he were to go in the pool he’ll be wearing similar to this anyway. Besides “all the women watching would get wet, while their husbands will be jealous” He works out too so probably very macho, the comment threw me for a loop though