My wife has become an exhibitionist over the years. She likes to wear short shorts and/or short skirts. She'll flash truck drivers every now and then and we've planned trips just for that purpose.
She's become braver over the years with my encouragement. Nothing wrong with being naked. Of course, I'm the ultimate voyeur so it works out well.
Now, if I could only get her three sisters to exhibit themselves to me on a regular basis, life would be perfect. I imagine us driving down the road, my wife topless in the front seat and one of my SILs topless in the back seat. Yeah, that would be fucking great!