"Rectum? Darn near killed 'em!"
— My Grandma, every time she has the opportunity...
In a short time, I'll be getting a "total colectomy and proctectomy" (or, for short, "proctocolectomy"!). This is a procedure where a doctor takes a robot with pointy sticks and knives, sets it loose in my belly, and then the robot proceeds to
become sentient and take over my body cut out all of my digestive system, from the end of the small bowel, to... the end end.
Red = parts to be removed (source: Wikipedia).