This is a clip form a video called Gay Erotica From the Past 8, which is a series of videos showing gay movie clips from the 50's, 60's, and 70's. Don't know anything about the particular film this was taken from, but the video contains several scenes from this, and most of the scenes use Lou Reed's Transformer as the soudtrack. It's just 2-1/2 minutes, so wait til the end!