Pooping After Nine Days

The last time I had a poo was nine days ago and I knew there was no way my toilet would be able to handle that much poo so I went out for a walk in the woods. I had an old pair of knickers that could be sacrificed under a knee length skirt and set off to the woods feeling pretty desperate for a poo. When I got to the woods there were some people around and I didn't want to to be seen squatting with my knickers down showing off my bum and pussy so I held it until they went away. There was just one problem. I was desperate for a poo and I had to go now. I just stood on the path and moved my feet apart and pushed hoping no one would notice what I was doing. I peed through my knickers as I felt my poo coming out into the back of them and man it felt so good. It wouldn't stop and bits of poo were falling out of my knickers onto the path but I didn't care about that. By the time I finished I had a huge pile of poo by my feet and my knickers were crammed full as well. I waited until no one was looking and took them off getting streaks of poo on my legs and I left them on the path before quickly leaving.