In the special, one-hour episode "Summer Belongs to You," Phineas and Ferb make it their quest to pull a Around the World In 80 Days without the Jackie Chan (and in one day of course) on the day of Summer Solstice, aka the longest day of the year. And to craft this superb adventure, the entire stinkin' writing staff and then some collaborated to put up some of the single funniest jokes in both the show, and modern animation. Am I exaggerating? NO. Literally every joke in this episode works on so many levels.