At dudesnude, the focus of the site is on nudity, as the name suggests.
Face and cock are optional, but at least one good quality shirt off pic, of everything in between the two, is required. That pic must not be marked private (unless an additional clothes off pic is uploaded first) as that will result in your profile getting disabled by an automatic process.
It's important that the 'This photo contains:' labels are correct on all your pics, for the site to work properly. If you do not have a pic labeled 'Body (clothes off)' the automated systems will believe you, and your profile will be automatically disabled. If you label a pic as clothes off when it isn't, that label will be checked and corrected, and that will also result in the automatic disabling of your profile. If your profile is automatically disabled, you can fix the problem yourself, and immediately regain access to the site, however anyone persistently mislabelling pics will be temporarily locked, until they acknowledge they understand what is required.