Maybe TMI?

Let's get real...we all know pooping during labor/delivery happens to the best of us. It happened to me when I had my son 4 years ago. However, my MIL wants to be in the delivery room this time which I don't mind, but is it possible to even prevent pooping from happening?? I don't care if my husband sees, he wouldn't ever bring it up because he knows better. But my MIL is so judgmental and I need to know of any prevention methods. LOL!