This article is from the Naturism FAQ, by Dennis Kirkpatrick email@example.com with numerous contributions by others.
This may increase your chances of being left alone by the easily
offended. If people are informed that nude persons may lie ahead, a
defense can be made that they were warned and chose to be offended,
thus theoretically invalidating their legal basis for objection. A
commonly-used sign, which has been used successfully for this purpose
in many places, reads "Attention: Beyond this point you may encounter