The Simpsons - Season 18 Episode 21 -

When finding out Jimbo, Dolph, and Kearney plan on sabotaging Springfield Elementary School's annual bake sale by releasing the "ultimate stinkbomb" (a rotten yogurt cup from Springfield's Nuclear Power Plant), Bart and Lisa enlist the help of Jack Bauer and Chloe O'Brian. Meanwhile, Marge attempts to make the perfect cake, so she can win the bake sale.