‘Why Don’t We’s’ Zach Herron & Jack Avery Hilariously Prank Kids (EXCLUSIVE)

“Why Don’t We” singers Jack Avery and Zach Herron are going undercover in a hilarious way! In this seclusive clip, the pop stars make an appearance on the Nickelodeon show, “The Substitute,” where they play some hilarious pranks! To see Jack and Zach’s full episode of the “The Substitute,” tune into Nickelodeon on Thursday Feb. 11 at 7:30PM ET/PT.