The decision is made for you.

Just as you are about to make up your mind you hear a knock on your door. You close the window for Master PC and go to answer the door. Your cock is semi-hard as you wonder who it could be since only your mother and one of your sisters are at home. Opening the door you see your mother. She still looks good naked even after all these years. She is smiling at you as she licks her lips. She clearly is in the mood as her cock is fully erect. She pushes the door open just a little more as she walks into your room. You are a little surprised until you remember the rules for the family you wrote.

"Sweety, you should give that computer a rest for a while. I need your help with something."
"What do you need, mom?"
"Just come into my room for a minute."