Josh Gad had the honour of interviewing friend and Frozen 2 costar Idina Menzel [1] on Friday's episode of The Ellen DeGeneres Show [2]. Things started as pure as could be with the two chatting about their upcoming Disney sequel [3], Idina's star on the Hollywood Walk of Fame [4], and the Broadway singer's new holiday album, Christmas: A Season of Love (which Josh also sings on). But before the interview concluded, Josh gave Idina quite a fright when a costumed Olaf jumped out of a box to scare her. And she was indeed terrified as she screamed and ran out of her seat. "I almost peed my pants," she said after recollecting her self. Watch the hilarious startle in the clip above!