Hmmm

we have not children. but there is same fear for me too.

bp – the simple answer, if asked, is that he (your Master) told you to. The kids should easily understand being told to do something and simply having to do it and given your relationship, this presents a wonderful opportunity to directly declare his role in your marriage. Most likely this will satisfy curiosity – at least at first. If they are still curious as to why he chose for you to wear female underwear, you could say that he and your wife simply prefer how you look in them. This isn’t the whole story, obviously, but also isn’t a lie.

A Dom is ultimately responsible for everything his couple does or doesn’t do. One of the essential roles of a Dom is relieving responsibilities from the pets he cares for – the fact you’re now pantied and cut off is entirely his doing and you can and should be free to put that responsibility on him rather than trying to explain your own motivations.