Started a computer assistance and turned into an obscene phone call. Making lode, suggestive comments to my wife then stating I should sell my wife to him for a night when she handed me the phone. He became upset when I told him he would have to pay me to take her back. I then asked him if he would like help with his problem and that I knew of some therapists that could help and asked him if I could give them his number. I then questioned him about the background noise and asked if he was at a friends house. I told him if I did a reverse number look-up and gave it to the police his friend would get mad and he shouldn't blame him if he did because it was the callers fault, not his friend. He gave up after 20 +/- minutes of this and hung up.