Peque Gallaga's Scorpio Nights.
TIL that it's Scorpio Nights because the main characters are Scorpios and this zodiac is very horny/s3xual daw
It's no wonder it's a classic, it's the type of movie that you think about and the feeling stays with you after watching it. I had the same feeling with Mike de Leon's Kisapmata. I was talking to my engr friend while watching the last minutes of the movie and I was in so much shock he told me why do I keep watching films like that kasi hahaha! Then I told SO hoping for a conversation and he said the same
I am guessing it was shot in the Manila/Quiapo area. Weird kasi there's a small gate pero inside it's a whole community living there. I wonder if communities like that still exist.