Rule 34 Dev - 1boy abs ai_generated animal_genitalia animal_penis anthro balls big_muscles big_penis blue_eyes chair crypto_botany detailed_background equid equine equine_genitalia equine_penis erection fur furniture furry furry_male furry_only genitals hair horse horse_penis horsecock huge_cock hyper hyper_genitalia hyper_penis male mammal mane masturbation muscular muscular_anthro muscular_male nude on_chair pecs penis sitting sitting_on_chair solo solo_focus vein veiny_penis|10482999696