No Nude Sex!
Nudists are having trouble being taken seriously, what with all the orgies going on. The Australian Nudists Foundation wants nudists to not be all having sex with each other while they're being nudists, so that people stop thinking nudists are dirty, naughty orgyists. They do make the qualification that it musn't be 'overt' sex, so go fuck on your own time, clothes-free naturists!