Um... for the record, this is just my curiosity talking. I don't have any parasite that big in me.
But like... some tapeworms can grow up to 30 feet long so I was wondering how the hell you get something like that out. If I have a choice, I'd prefer to be knocked out and they open me up to take it out. For it to go out my rear end.... um.... uh... I'd rather be unconscious the whole time.