FURVERT!

abs animal_genitalia animal_penis anthro balls bed biceps black_balls black_penis black_sheath duo equid equine equine_balls equine_genitalia equine_penis equine_tail erection flared_penis furniture genitals group_masturbation horse lying male male/male mammal masturbation morticus muscular muscular_male nipples on_back on_bed pecs penile penile_masturbation penis sheath tail vein veiny_penis