the nightgown forest
 

Put on the most feminine, lacy, frilly, etc... ladies nightgown you can find, preferably with matching peignoir, white, pink, etc... barefoot or with some hosiery and flats, perfume and anything else you'd like, as long as it's very girly and doesn't detract from your gown. Late at night take a long walk on a trail through a forest of big old trees until you reach a special place and masturbate there, standing or lying down if you left a blanket hidden nearby ;)

Try to prolong as much as possible. If you normally feel a little ashamed or disgusted with cross dressing and/or masturbating after you cum then you'll be in this state while you endure the walk back to your ride or whatever else you've arranged which could be a few miles away!

You could also stop in multiple places on your journey and masturbate without orgasm and return without having cum either and this all could have been part of a more complex ritual and preparations. The main thing here is the thrill of being alone in a spooky wood, feeling the night air on your skin, dressed like a sleep walking fairy princess bride. You could also do it totally naked, but wearing a frilly gown is probably more embarrassing and it's not indecent exposure if you're seen. The gown may have other special significance. ;)

You can prolong it into the next day if you sleep in the forest, then you'll have to return dressed like that in broad daylight! Or just stay there until it's dark again. Maybe you can arrange to be shackled to a tree or imprisoned some other way. You might not be so excited after you cum knowing you're stuck right where you are until long after the sun comes up. Or maybe you got up very early in the morning and walked out there while it was still dark and by the time you're ready to come back it's already daylight.