Now, while most nude resort visitors are taking the one piece of clothing rule in stride, there are some naked naysayers shouting down the face mask. Among their gripes ... mask tan lines, according to The Wall Street Journal.

The Solair Recreation League, a clothing-free resort in Connecticut, says it prides itself on a "no tan lines" motto, so it's been a difficult adjustment, and some guests have complained.

But, let's get to the bottom line here ... as posed by the Cypress Cove Nudist Resort in Kissimmee, FL -- "If you’re wearing a face mask, are you really nude?"

Apparently, that's a big hangup for many, who feel it's their right to be completely in the buff if they are at a nudist resort, and there should be no exceptions. You get the point ... face mask face-offs are brewing at nude joints.

Let's hope they don't end with the kind of madness we've already seen around the country -- no one wants to see broken bottles and nudists rolling around in a fight. Right? Okay, maybe that's just us.

Still, most guests are complying for the greater good, and even better news -- their naked bods are getting a greater dose of vitamin D than most ... which scientists have said helps ya fight COVID.