Nikolaj Lie Kaas, who plays Dirch Passer, is the son of Dirch's frequent collaborator Preben Kaas (here played by Martin Buch).
According to Nikolaj Lie Kaas, one of Dirch Passers most memorable sketches, "Hoppegyngen", also depicted in the movie, was inspired by him as a child. Preben Kaas (played by Martin Buch), Nikolajs father, got the idea when he gave Nikolaj a similar toy as a gift.