Rule 34 Dev - 1boy abs armpit_hair biceps big_biceps big_muscles big_pecs big_penis big_triceps bodybuilder bowser bowser_day climax cum cumming erection growing growth huge_balls huge_biceps huge_cock huge_muscles huge_pecs huge_testicles hyper hyper_balls hyper_muscles hyper_penis koopa lifting male male_only mario_(series) muscle muscle_growth muscles muscular muscular_arms muscular_ass muscular_legs muscular_male nintendo pecs ripped shell solo squatting standing sweat sweating thwomp triceps veiny_muscles veiny_penis weightlifting weights wolfgerlion64|6702562208