May 7, 2014 11:48 pm Zac Efron Dishes on Seth Rogen's Pranks on “The Tonight Show” Zac Efron says he took off his shirt when Seth Rogen asked him to while shooting “Neighbors” until he realized that the “Knocked Up” star was only giving him a hard time. US & World Videos 3:26 Confrontations occur at UCLA campus amid ongoing protests 0:57 Fights break out at UCLA between pro-Palestinian, pro-Israel supporters 8:39 Gina Rodriguez gushes 0ver motherhood with son Charlie 2:22 Scarlett Johansson and Colin Jost have date night at White House Correspondents' dinner 1:37 Pro-Palestinian protesters gather outside White House correspondents' dinner