Rule 34 Dev - 3boys balls ballsack bara couch gay humanoid humanoid_genitalia humanoid_penis indoors kittikary koopaling larry_koopa lemmy_koopa ludwig_von_koopa male male/male/male male_nipples male_only mario_(series) multiple_boys muscular muscular_anthro muscular_male nintendo nipples pecs pectorals penis penis_out sitting yaoi|6626392432