Rule 34 Dev - 2020 abs abstract_background alvcard anthro balls barazoku bicep_curl biceps chest_tuft dumbbell ear_piercing ear_ring erection exercise genital_piercing genitals hair humanoid_genitalia humanoid_penis kihu lagomorph leporid looking_at_viewer male male_only mammal muscular muscular_anthro muscular_male navel nipples nude pecs penis penis_piercing piercing pubes rabbit simple_background solo solo_male standing tuft weightlifting weights workout|4373018952