David Spade as Wayne, Ben 's dimwitted unemployed father Nat Faxon as Mardy, Larry 's scientist father Joey Bragg as Ben, Wayne 's son who is a recent college graduate and Larry 's best friend Matt Shively as Larry, Mardy 's son and Ben 's best friend Bridgit Mendler as Meredith, Ben 's love interest Camille Clark as Caryssa, the hot townie Jackie Sandler as Krystal, Mardy 's wife, Larry 's stepmother, and Aiden 's mother Mary Gillis as Ruth, Larry 's neighbor Jared Sandler as Nathan, Ben 's and Larry 's friend Bill Kottkamp as PJ, Ben 's and Larry 's friend Kevin Nealon as Peter Francis, CEO of ISG Energy Peyton Russ as Aiden, Krystal 's son, Mardy 's stepson, and Larry 's stepbrother Moses Storm as Trey, Larry 's drug dealer Dean Winters as Geoff, a neighbor who runs in the "wife carrying race '' Ashley Spillers as Olivia, Mardy 's lab assistant
who plays dad in father of the year
David Spade Nat Faxon