Rule 34 Dev - 2016 abs anal anal_sex anthro ass balls bed biceps big_balls big_muscles black_penis blue_eyes brothers collar cum derrick eric fasttrack37d fur hair hands_behind_head highlights incest lombax long_hair male mammal muscular muscular_male open_mouth orgasm pecs penetration penis piercing ratchet_and_clank riding sex sibling stripes twincest twins video_games yaoi|2288748424