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5_fingers 5_toes anthro anus balls blush brick brick_wall brunisdraws butt castle erection feet fingers foot_fetish foot_focus genitals hi_res humanoid_feet humanoid_genitalia humanoid_hands humanoid_penis koopa koopa_troopa leg_grab light male mario_bros nails nintendo penis plantigrade scalie shadow shell signature sitting small_penis soles solo spread_legs spreading tail toenails toes turtle_shell wall_(structure)yellow_body