El periscopio 1979
Verónica (Barbara Rey) and her friend (Laura Gemser) are two very sexy bisexual nurses who live upstairs from a rather boring couple and their teenage soon. In a science class at school he learns how to build a periscope, and uses it to spy on the nurses sexual antics. This all gets to be too much for our young lad as he soon starts to suffer from unexplained pains in the groin area. It all comes to a head when the parents of the boy ask the nurses to come and check him out and Laura proceeds to realize what the problem is. So she promptly wanks the boy off in front of his parents.