rule 34 alpha channel anthro anus ass ass up backsack balls biped countershade tail countershading cuntboy english text erection eyebrows fin fin piercing fish full package cuntboy furgonomics furry specific piercing genitals glans green eyes hair herm hermaphrodite humanoid genitalia humanoid penis intersex kittydee male maleherm marine multi genitalia penis piercing presenting presenting hindquarters pussy ring piercing shark simple background solo tail tail fin text transparent background 8820022