Seth Rogen and Zac Efron joined Jimmy Fallon on the Tonight Show for his "Ew!" segment so the three could discuss all the things that make them go "ew." In their floral printed sundresses, the three take selfies, dance to "Turn Down for What" by Lil John and get "ew" texts from James Franco. The popular segment has also featured first lady Michelle Obama where he and Will Ferrell learned healthy food wasn't "ew."