S'Winter, Jerk de Soleil

The boys use a sno-cone machine to create a Winter paradise during the middle of Summer in their backyard, Candace tries to pursue Jeremy (who thinks dropped her for a Swedish exchange student), and Doofenshmirtz tries to melt chocolate with a machine made from laser pointers.
Phineas and Ferb create a circus for the neighborhood and Candace becomes the surprise hit of the show while, Doofenshmirtz creates a device to make people's voices higher, making his deeper by comparison.