Rule 34 Dev - abs ass ass_up back_muscles bent_over biceps big_chest big_pecs blueboybara bulging_biceps butt caucasian caucasian_male clark_kent dc gay huge_chest huge_pecs kal-el kryptonian lex_luthor looking_back male male_only muscle_growth muscles muscular muscular_male on_all_fours pecs presenting_anus presenting_ass shirt_lift shirtless_male smooth_chest smooth_skin superhero superman thick_thighs thong underwear underwear_only|8822604664