You can also think of it differently. Clothes are clothes. Society has made them different. Take a look at the Scottish and the kilt. Of course they wear nothing under them traditionally. Any way underwear is underwear. He just might like to wear the way female underwear feels. You have to admit that it is a lot softer than jockey shorts. Although they would be a will more confining. If you are really that worried and you really like him, asking him about it!
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