Family adventures 2: My step-son has me in his hands

Part 2 of the family adventures saga! this time my step-son arrives home earlier than usual and he discovers me ,, ehm,, ... reading my book? anyway this daring young men don't obey me when I tell him to go to his room... instead he pull out his BIG COCK and didn't let me finish my book.... What can I do to make my stepson leave me alone?