Ao Sul do Meu Corpo (1982)
This one starts weird — a mature white guy in a suit fires a cannon outdoors and then lights a cigar. Nothing sexual yet. He meets up with a blonde MILF indoors. They talk near a dining table, then move outside to a garden area. They chat some more, sitting down. There’s no sex at all in this, just conversations and random stuff. Not sure what the cannon is about, but it’s definitely different.