with her dad...I'm showing you and others that millions of people in Asia and Scandinavia do the same thing, so for JB to do this (not established as true yet by the FBI review of the diary), would not be "weird" at all...maybe not common in the U.S., but not inherently weird on a human level...actually, let me amend that...there are ~260 family nudist camps in the U.S....just add that to your list of things to freak out about ;-)...
Here's one more testimonial from a Swede on this practice...
------------------
In public spaces saunas are usually segregated by gender, as they're usually located together with changing rooms and showers.
In private saunas it's very common for people to sauna naked with relatives and friends, no matter their age or gender. It isn't considered sexual in the slightest, it's frankly just a group of people sweating together.
It's not uncommon for people to cover themselves either with a towel or swim trunks if they're more comfortable with that. This is extra common with teenage boys, simply trying to avoid any embarrassment from perfectly normal and harmless bodily functions. I don't think I have to spell out exactly what I mean by that.
--------------------
You are way too high strung...chill, Stark...for your own good.