Come in dear, Mummy has got something very important she needs you to do. You've always been Mummy's favourite step-son, you're such a good boy for your Mummy and I was just wondering if you would help me with this little problem I've got... You see, I kind of got my dates mixed up and i didn't realised that your step-Daddy would be coming home today, and I've invited a special friend over for some... "grown up fun". I can't have step-Daddy knowing about it but I'm worried he might come back whilst my special friend is here. So I need you to be a look out for me, okay darling? I need you to stand outside my bedroom door and watch out the window to see if step-Daddy's car come's back. You can do that for Mummy can't you darling? You are such a good boy!