Rule 34 Dev - abs anthro armpit_hair balls biceps big_balls big_muscles big_penis blue_clothing blue_underwear body_hair bowser bulge clothing collaboration digital_media_(artwork) erection feet flexing flexing_bicep foreskin genitals growing growth hair horn huge_balls huge_cock huge_muscles humanoid_genitalia humanoid_penis hyper hyper_balls hyper_genitalia hyper_muscles hyper_penis icewolf koopa long_image looking_at_viewer male male_only mario_(series) muscle_growth muscular muscular_anthro muscular_male muscular_thighs nintendo nude open_mouth pecs penis pose pubes raised_arm red_hair red_pubes ripped-saurian scalie simple_background solo tail teeth torn_clothing torn_underwear transformation underwear vein veiny_muscles veiny_penis wide_image|11454887696