I remember one time I seriously had to take a dump. I was driving home and I was starting to crown, to the point where I was driving while hovering in the seat. I finally made it home, rushed into the bathroom, pulled my pants down and EXPLODED into that toilet bowl. For the next 15 minutes I just sat there in a daze and let whatever was inside me come out. After I was finished, I admired the horror I had created in the toilet for a few seconds, then I flushed it away.
After the first flush, I saw that most of it had gone down except for this large clump that appeared to be stuck on the bowl near the bottom. Flushed twice more; it was still there. Finally, I used tissue to wipe it off the bowl quickly while the water was still down. Never saw anything like it before.