FURVERT!

abs animal_genitalia animal_penis anthro balls biceps big_muscles big_penis biped black_hair blue_eyes brown_body brown_fur equid equine equine_genitalia equine_penis erection fur genitals hair holding_penis hooves horse looking_at_viewer male mammal masturbation muscular muscular_anthro muscular_male nipples nude pecs penile penile_masturbation penis sitting solo trogan two-handed_masturbation vein white_body white_fur