for mature audiences only

So, a friend asked me about this today, and I have gotten her permission to share it in the hope that you might respond. As you all know, I talk about toilet stuff a lot. Sometimes I wonder if it is because of my dutch heritage, sometimes I know. Point being that others seem to feel free enough to share with me their toilet stuff...

This friend shared that when she gets nervous, she always has to poop. Or is it that when she has to poop she gets nervous? The same feelings and physical reaction happen either way. So is this a phycological reation to maybe her father or mother saying "ooo yuck, another dirty diaper"? Or is it that everyone gets nervous when they need to poop? I have asked another person this question, and they responded by saying "I just have this spear-y feeling". I dont know, but if you have any insight into this matter, please respond by telling me with the shout out.