Honey, your father and I heard a repetitive sound coming from inside your bedroom. What are you doing? Oh, I see... you're jerking, and it appears you're jerking to the sound of your father and I having sex in the other room. Is that something that turns you on? Are you... jealous of him? Well there is only one way to fix this problem and it's going to involve this chastity cage that I'm going to put on your dick. That's right, honey. Your mommy is going to be your key holder! Clearly you can't control your own dick so I'm going to do it for you and there is nothing you can do to stop me.