The Tonight Show Starring Jimmy Fallon S09 E154 Hailey Bieber, Austin Butler, Stephen "tWitch" Boss, Phoebe Bridgers

"Tonight's just getting started."

Jimmy breaks down basic arithmetic using pop-culture references and notable names in Popular Mathematics, then catches up with Hailey Bieber, Austin Butler and Stephen "tWitch" Boss before enjoying a musical performance from Phoebe Bridgers.