While it’s a fan favorite, critical opinions are a bit split on whether it's "peak" De Funès: The Exchange Student (1967) - IMDb
De Funès plays Charles Bosquier, a dictatorial headmaster of an elite boarding school. When his son Philippe fails his English exams, Bosquier sends him to the UK for a summer exchange. Instead, the son sends a friend in his place so he can go yachting, leading to a madcap chase across France and England as Bosquier tries to fix the mess.
If you're diving into the French comedy classic (1967), you're essentially signing up for a high-energy one-man show starring the legendary Louis de Funès . Released internationally as The Exchange Student , it captures a specific era of French cinema right before the social upheavals of 1968. Movie Overview
Pure 1960s slapstick. It’s full of frantic energy, exaggerated facial expressions, and "nervous madman" energy that is De Funès' trademark. Solid Review Points