[Enlil]

Since these are the last days of summer, make the best of it: on a sunny day go for a walk in the countryside. Choose a place where there aren't many people, but it is possible someone will come. Once you get there, take off one piece of your clothing, then walk 50 steps, and take off another one, repeat till there are no more items of clothing left. Once you're naked, walk another 50 steps and lie down on the ground, face up. You must stay there for 15 minutes. Enjoy the sun and wind on your body. Once 15 minutes are over, masturbate to orgasm. Then you'll still have to walk naked/partially undressed a little to retrieve your clothes.

If you're more daring: instead of lying down on the ground, kneel down for 15 minutes (+ masturbation time), legs apart, a blindfold on your eyes.

Another one, a classic: You will need a suitcase with a lock. Go for a walk at night (or very early in the morning?) in your neighbourhood. Hide the key in a previously picked spot. Then walk on for ten minutes. Once the time is over, get naked, put your clothes in the suitcase, and lock it. Congrats, now you're naked in public and you have to go back to the key in order to get back your clothes.