John Mulaney returns to his Chicago high school with David Letterman as they candidly discuss addiction, fatherhood and the state of stand-up comedy.
世界這樣大，假期這麼少，與其次次去同一個地方食玩買，不如趁地球尚有，看些快將消失的？溶化的冰地、沉沒的小島、瀕臨絕種的動物、逐漸沒落的文化......而家唔睇，遲啲冇得睇㗎喇！
