Looking for (vintage) porn film/scean

I’ll try and be brief.
Looking for what I think was a vintage porn scene, naive girl goes outside comes across a guy selling ice cream. Guy tricks her to give him a blowjob saying it would produce a special ‘Italian ice cream’ she sucks him off he cums she says it doesn’t taste like any ice cream she has had. She leaves but all that time was watched by what presumably is a prostitute on a tree, asking her what she was doing behind those bushes she doesn’t think she did anything wrong. Prostitute says this is her area, I remember the video in quite a bit of detail but never remembered where I saw it or what it was called.