The act of
taking a shit that causes
significant burning around one's anus, especially after one has eaten really spicy food.
The shit burns as though there is a Dragon in your ass trying to get out, and the valiant Sir Porcelain (toilet) must fight to protect your Ass from being ravaged by the flame of
the Dragon.
"
Holy shit dude, I had to fight the ass-dragon all
morning after eating those Habanero Peppers!"
"Mmm.
Spicy Thai Food." *Four hours later..* "Dear lord! Fetch my shield and sword! I have to fight the ass-dragon!"