I was playing xbox. I twice over the course of a few hours. I then noticed my bum feeling like a wet/ slightly irritated feeling. Can't really describe it. I went to the bathroom and I wiped myself 3 times. For the first time, I noticed the tissue looked like it had been worn out and it wasn't 100% pure white. It looked slightly off coloured. It was like 90% ish white. The second and third time I wiped myself I went in a little further and there was absolutely nothing there. The tissue was 100% pure white. What's happened?