FURVERT!

alternate_species animal_genitalia animal_penis anthro anus backsack balls barbell_piercing beard biceps big_balls big_muscles big_penis bodily_fluids body_hair breeding_mount butt chest_hair cum cum_collecting equid equine equine_genitalia equine_penis evan_(kihu)excessive_cum excessive_genital_fluids facial_hair flared_penis genital_fluids genitals growth hi_res hooves horse horseshoe huge_penis kihu male mammal masturbation medial_ring muscle_growth muscular muscular_anthro muscular_male nipple_barbell nipple_piercing nipples pecs penis perineum piercing solo