This evening. Lovely mild, light, spring evening, decide to go for a gentle stroll in the park with DD and dogs. See charming young couple walking hand in hand in front of us, no small children, no special needs, no mobility issues. "Ah, loves young dream" I think.
Shortly, the couple separate and walk slowly in different directions. "Ah, going to pose for a softly backlit photo to show their romance blossoming" I think.
Couple remain, separated but squatting in bushes. "Ah a simple game of hide and seek to show spontaneous nature of loves young dream" I naively think 
.
On approaching, as walking the dogs, I am able to see she has her trousers down and is weeing/pooing in the bushes. Turn back to see squatting shatting boyfriend is now standing and weeing against a tree.
I got the rage.
Me loudest voice with tone of righteous indignation "EXCUSE ME? EXCUSE ME? There is a public toilet 100metres over there" I was ignored, and given a shrug of the shoulders by little Miss Holly Golightly.
So I repeat, my volume rising "EXCUSE ME? There is a public toilet, that is OPEN just over there. I suggest you go and use it as I DONT WANT TO SEE YOUR BARE ARSE!". Point at Golum boy, and repeat same phrase.
Loves young dream ( Golum boy and Golightly) pull up their trousers and shuffle off, muttering "alright! alright" under their breath. Was it a dare, a FB craze, a bizarre fetish, extreme sport dogging???? I don't care.
DD gives me a 
, I give her a 
, we carry on our walk.
AIBU???