Even the underwear's becoming longer

[Torchwatch]

A few years ago I was running in rather short running shorts, passing a group of schoolboys one of them pointed at me and said that his underwear was longer than my shorts. I have wondered why he needs long underwear, if you wear long underwear you then need long shorts to cover them or the underwear hangs out looking awful.
I can understand how in winter or if one works in a freezer then thermal underwear may be needed, but in spring and summer this seems irrational. Allowing the testes to overheat reduces virility, so why deliberately trap heat in this area in warm weather.
Under normal conditions the function of underwear is to absorb all those drips and scrapes that are part of being human and so keep our outer wear clean for longer, although well designed underwear can give support and shape for that part of the body this is not essential.
Looking at cam4.com from time to time I would say that brief underwear is actually returning, and with brief underwear hopefully brief swimwear.