All the beneficial therapeutic effects, and also all that is essential in the physical and mental control of the passions, as advocated by the nudists, can be attained by familiarity with the sight of the exposed body while clad only in short trunks, such as men wear at most of the bathing beaches, but without the exposure of the sex organs themselves. Hence there is no adequate excuse for catering to exhibitionism through complete nudism.
Source: Health hints for four-fold health: for the purification and health of the body, mind and emotions by Frank Homer Curtiss (Order of Christian Mystics, 1938, p.13)
At least, ‘No-Pants Days’ are excusable.
Image: No-Pants Day Paris : Culotte & Slip triomphaux ! 16 | Flickr – Photo Sharing! (under Creative Commons license)