(at around 5 mins) During the flashback, Luisma tells Barajas that he laughs a lot with a comedian from Un, dos, tres... responda otra vez (1972) who carries a ladder, and then they both imitate him and parody his catchphrase ("Joooder"). The comedian is none other than Pepe Viyuela, who 17 years before (around 1993) played a clumsy character with whom he gained great popularity in Spain. Pepe Viyuela plays one of the main characters in this series (Chema).