You use Slave4U, but just on your mom.

You realize that the most exciting part of this game you're playing with your parents is that you haven't used Slave4U. Emma is your absolute sex slut whore toy and weapon. She is no longer a challenge, dominating her is easy - degradation is her very being. But seducing your parents to fall prey to societies sacred taboos - that's thrilling. That said... you really just want your mom to be your absolute sex slut... so you give in and give her a double-dose of Slave4U.

Not long after she's literally drooling. You can tell you're in for a good time.