Rule 34 Dev - 5:4 ambiguous_gender anal anal_penetration anthro anus avian big_anus big_butt bodily_fluids bowser butt duo facesitting fur gryphon hair horn huge_butt koopa larger_male looking_back looking_down male male/male mammal mario_bros muzzle_fuck mythological_avian mythological_creature mythology nintendo nose_to_anus nude oral penetration presenting presenting_anus presenting_hindquarters red_eyes reptile rikuaoshi scalie sex shell sitting sitting_on_another size_difference smaller_ambiguous smile snout_fuck spikes star_lubanah sweat tail unknown_species|7024907656