I was walking in the park and I really had to poo but I knew there were some toilets next to the tennis courts so I wasn't too worried about it. It was a long walk to the toilets and as I made my way to them I started getting desperate. By the time I got there I was nearly pooing myself and as I walked up to the door I felt a big urge to push but I managed to hold it. I pushed the door but it wouldn't open so I tried to pull it but it was locked. I was so desperate I had to use the men's instead but they were locked as well. Now I was in trouble because I was about to poo myself and with no chance of getting to a toilet my only option was to go in my knickers. I leant back against the wall with my feet apart and pushed. I peed down my legs as I filled my knickers and the relief of it was so good I didn't care how many people saw me.