Was hiking with my wife and a friend, got pretty high up in the mountains after a few hours and both of them had to pee, though I didn't. We hadn't seen anyone else for a while so no big risk of anyone walking by, but they went and found a little clearing between some trees a bit off the trail. I could see them from a distance of maybe 30 feet. They took turns and kept lookout for each other (i.e. looking at me to see if I waved that I saw anyone coming, though I didn't) while standing just a few feet apart. Neither of them stared at length at each other, but he did briefly see her ass at least from the side when she pulled her pants down and squatted, and she saw his cock.
She didn't do the "be mature and tastefully don't acknowledge it" thing either, once they came back over and we were walking onward she just said out loud "so I just saw your dick, so that's weird" to embarrass him. LOL
