[Klickfoot]

I know full public is a limit but I hope this is hidden enough for you

Go into the woods wearing a diaper under your clothes. Drink plenty of water beforehand. Take a bag of girly clothes with you, which should include a dress or skirt that won't fully cover your diaper. Once you're far enough out, strip to just your diaper and put on your girly clothes and put your boy clothes in the bag. Walk for five minutes like that, then stop and wet your diaper. Once you're wet, you'll sit down right where you are. Rub yourself through your diaper until you're hard, then stop. Quickly find a tree or log or downed branch or something and hump it for five minutes. If you cum in your diaper before five minutes is up, you're done and you can change back into your boy clothes. If you fail to cum by humping nature in your diaper in five minutes, you must walk back to the beginning of the trail in your humiliating outfit. Once you're there, you may change back into your boy clothes, besides the fact you'll still be wearing your wet diaper until you get home.