"You Do the Dishes, and I'll Do You" - She is the New Sex Toy While Mommy is Away

My stepmom has been on vacation for a week. When she told us her plans, I said that I could cover for her and do everything that she does around the house, as if it were so easy. It isn't. I don't know how she does it! I have to clean, cook, and let my stepbrother and stepdad freeuse me all the time. How am I supposed to keep everything spotless if they keep filling my pussy nonstop? I'm still not giving up, though. If she can do it, I can do it. She is going to be so impressed with me when she comes back.