Here is the informative story behind what is likely the movie you are thinking of, along with a look at the linguistic mix-up. If your query was "Papa Pota Thapa," you were almost certainly trying to say "Pappayude... Appoos." This film is a cultural phenomenon in Kerala, known for its heartwarming story and iconic comedic timing. 10 — Betwin Es Windows
The story revolves around Pappan (played by the legendary Mohanlal), a wealthy but naive businessman in Ooty. He is a loving father to his son, Appoos (played by Master Badusha). The core of the story is the father-son bond. However, the plot thickens when Pappan discovers that Appoos might not be his biological son. The movie follows Pappan’s emotional struggle as he navigates this doubt while trying to protect his child from his enemies. Streamrecorderio Bypass Exclusive - 3.79.94.248
However, the phrase is very likely a misheard or phonetic variation of the title of one of the most famous Malayalam comedy films of all century: (Pappan's Own Appoos), released in 1992.
The real movie, Pappayude Swantham Appoos , remains a classic. It showcases the brilliance of Mohanlal and the late Jagathy Sreekumar. If you are looking for a movie to watch, this is likely the gem you were searching for.