Dear Mrs. Klein, 

The reason your son has been late in returning home several times a week for the past month is this: He is in training with me.
I have taken it upon myself to teach him in all of the ways to take pleasure in a woman, and to eventually give pleasure to a woman in equal measure. For now, he jizzes himself after three minutes of polishing his dick in my cunt, but he is improving. 

This process takes quite a bit of hard work, so don't expect him to be much help around the house.

-Karen