A guy 'helpmerhonda' was on the Body Odor forum talking about Tapeworms - he had some, he eliminated them, and now he's all better. He used to post here as well.
All I know is if I *EVER* shat out a living creature from my poophole, I would take that bug to my doctor and say "these are inside me... help?" and go from there.
Apparently many of you claim to have expelled Tapeworms from your poopholes... I would take so many pictures.