"a parasitic flatworm, the adult of which lives in the intestines. It has a long ribbon-like body with many segments that can become independent, and a small head bearing hooks and suckers. The pork, beef, and fish tapeworms are large, flat, ribbon-like worms that live in the intestine of people and can grow 15 to 30 feet (4.5 to 9 meters) in length. They can live for years. Tapeworms have many segments. Each segment is able to produce eggs. The eggs are spread alone or in groups and can pass out with the stool or through the anus."
-google
just a friendly reminder that you may possibly have a 30 foot long worm inside you right now