The title is a play on the drama series This Is Us , which featured several Psych cast members in guest roles. Psych S6E09: "Neil Simon’s Lover’s Retreat"
This film follows Shawn and Gus as they prepare for Gus's upcoming wedding to Selene and the birth of their first child. [S6E9] This Is Gus
Shawn dresses as a "Rob Zombie" knockoff, while Gus portrays a ventriloquist with a puppet named "Tuxatawney Phil". The title is a play on the drama