Voir Kim Possible, The Complete Series - Episode 69

Ron goes on an all Bueno Nacho diet to prove that the Food Pyramid is a horrible health conspiracy but when he starts to grow too big for his britches (literally!) Kim thinks it may be time for him to admit defeat. During a mission Ron falls into a vat of serum that slowly changes him into a 15 foot behemoth and the only way to stop him is for Kim and the Tweebs to trick him into eating healthy food from the Food Pyramid!