My stepson !! Did I go too far now?

I could not believe my eyes the other day when I came into the room to Christian my step-son and wanted to wake him up. He lay on the bed with his cock in his hand, and got down on a porn down. When I saw what movie he got down there, I was even more shocked. It was a movie of mine !!!!!! What should I do with him now how should I react ??? One thing I can tell you with the reaction he probably did not expect .............