After you eat, the digestive track moves along your feces in order to "make room" for the new food to be digested. You can't hold it all at once. Everything moves, at what's at the end comes out. Simple science. It's normal, if you have eaten regularly for a couple days.
Thinking of storing it are you?? I dont think the human body was meant to actually store its feces. You're bowels can only hold so much. Might as well move those bowels so that you dont get polyps and cancerous tumors, right? At least that is my own personal preference.