7.9F40M/Have fun with each other while you watch
From Create Your Own Story
You decide to have some fun, before having real fun. The desire to fuck is great, but you can wait. You say to your children, "Kiss each other on the lips." Immediately their lips lock as they kiss passionately. There is no thought between them that they are brother or sister, or doing this in front of their mom.
After a short time, you say, "Grab each others asses." Immediately you see their hands move so they are grabbing each other's asses and squeezing. Their lips never part.
You get bored watching them and tell them to stop. The both stop and face you, waiting for their next instructions.
You have your children: