FURVERT!

abs animal_genitalia animal_penis anthro balls bar biceps big_penis biped blue_eyes blue_hair equid equine equine_genitalia equine_penis erection fur genitals grey_body grey_fur hair hi_res horse looking_at_viewer male mammal masturbation muscular muscular_anthro muscular_male nabesiki nude pecs penile penile_masturbation penis pose presenting sheath sitting solo vein white_hair