Yes, but she does not believe it herself.

Note:

I'm not really happy with this chapter, but it has been in a draft state for ~2 years and hasn't gotten any better.

Missing is any description of the sister, and what she might have written in the notebook. If anyone wants to take what is here and run with it be my guest.

As your mother goes to grab the notebook and pen, "Yes, about 7 or 8 great grandmothers up my matrilineal line; was Mildred. From what I was told by my mother and grandmother, she came close to dying because of her husbands enjoyment of having his and I quote your grandma here, '100% all-beef thermometer completely sheathed' in her mouth. Mildred was apparently very gifted with a lack of gag reflex, but she would still need to breathe at some point. On one of the times her husband was using her throat she was close to Asphyxiating, she 'apparently' appeared in room with people who called themselves 'The Architects' or some such."

"They apparently gave her and her daughters and their daughters and so on would have an ability to breathe when something was interfering with their throat, allowing her and every female child down the line to your sister to have no worry about ever dying from ****, all to apparently prepare us for what would turn out to be our 'masters cock'."

"I doubt any of that is true, much more likely is that the women of our family just have some genetic quirk that allows us to breath differently when we would other wise suffocate."

"However from experience I can tell you that our gag reflex starts out still alive and kicking, but once we get past that, or train it to stop our throat jobs leave our men very happy indeed."

"According to my mother she noticed that the reflex does comes back after about a month, if not given the proper maintenance. But I never noticed that with your father."

With an excited look you ask your mother, "Wait, wait, are you saying I can use Andrea's or your throat as my personal cock sleeves, for whatever length I want? With no ill effects?"