Burned like a friend's mother has sex on the phone and began to masturbate

The guy came to a friend a little earlier than agreed. He entered the house as to himself and found it so that the mother’s mother undresses in front of the phone and is preparing to have sex on the phone with her lover. The boy was terribly excited and the escape to another room quickly move to the situation. He did not expect that he could burn his friend's mother naked. But apparently, the mother caught him on an awkward moment.