Rule 34 Dev - 1boy 5:4 abs animal_genitalia animal_penis anthro balls bed big_penis equid equine equine_penis erection furniture genitals hi_res horse katarhein lying male male_only male_urethral_insertion malihus mammal muscular penetration penis smile solo sounding_beads thick_penis urethral urethral_insertion urethral_penetration|6017274416