Michael Burns - That Cold Day in the Park - 1969 - updated with some pics that (barely) make it NSFW

Different type of movie for sure. Kind of a bummer the scene stays with a "soft focus" of the young man changing clothes and focuses on the woman's reaction instead.  BTW, does anyone else recognize Burns as "blue boy" in the (unintentionally) hilarious dragnet episode about LSD? IMDB description: Robert Altman's sadly neglected film that, along with his later "Images", fits into the unconventional psycho-thriller mold. A bizarre story with Sandy Dennis as a spinster who takes in a handsome young man (Michael Burns) who is pretending to be mute. She imprisons the boy and supplies his every need, including a prostitute (Luana Anders), whom she goes out and brings home for Burns' pleasure.

Pics from different source (You Tube - not sure they are better or not)