Try to remember that it's not only autism that defines your son. He's also just become a teen, and I'm afraid all young people have the propensity to become 'monsters' as their sexual hormones kick in and a knowledge that they don't always have to do as mom and dad say.
What are you trying to teach him? Because if it's not being well received, you maybe need a different method to get it across, or even a different lesson. Because autistic people just aren't the most patient and considerate of people. Doesn't mean they are horrible per se, but it does mean that as well as love, they need patience and understanding and sometimes even a little bit of cunning, to get the best out of them.