Zac Efron on Playing a Dad in ‘Firestarter’ and Redefining the Word ‘Zaddy’ (Exclusive)

Zac Efron and Ryan Kiera Armstrong chat with ET's Lauren Zima about 'Firestarter.' The actor reacts to disbelief from his longtime fans that he's old enough to play a father, and shares his thoughts about the term 'Zaddy.' Ryan opens up about following in the footsteps of Drew Barrymore, who toplined the film adaptation of Stephen King's horror novel in 1984. Zac also teases his upcoming role in the reboot of 'Three Men and a Baby,' which he hopes will feature cameos from the original cast. 'Firestarter' is in theaters and streaming on Peacock on May 13.