Taking a poop so large it's considered an opooperation. It isn't clear when a poop becomes an opooperation. But at a certain size the poop becomes an involved operation similar to a surgery or a black ops mission. A large opooperation takes time and planning to execute. You must first pick a location, then you can plan the first incision (where the poop will go first) If the initial skirmish goes well it is usually followed by a large payload and then shuddering, eyes rolling back pleasure.
I had the opooperation to remove the poop from my colon. It was a success! it's a boy! I took a hot runny opooperation all over terrorism, he didn't make it...