Well you could be like my coworker. Get colon cancer (or was it rectal cancer? No matter), have them eliminate the colon completely by removing three inches of intesting and then re-route the remaining intesting to exit out of a stoma on your abdomen. Then wear a colostomy bag.
Believe me, there is nothing inefficient about his setup. You never have to stop what you're doing to poop (you don't even have to make a concious effort!), and you can impress your friends by always having the smelliest dookie.