Rule 34 Dev - after_sex anal anthro ass balls big_butt bodily_fluids brother brothers canid canine canis cum cum_in_ass cum_inside desi_(thecon) domestic_dog duke_(thecon) femboy genital_fluids genitals hand_on_butt hi_res huge_butt incest lying male male/male mammal monochrome on_side penis sibling thecon twincest twins yaoi|5039654056