A lobster sandwich is a beautiful thing until you find a tiny, thin worm in it, as a recent reader did who wrote to us via the All About Worms Facebook page. The reader purchased the thin worm-infused lobster sandwich at “a food fayre,” which we are assuming is a food fair that took place sometime in the 1800s for spelling-related reasons. After a few bites of the sandwich, the reader “saw a tiny (almost like a hair) sized worm that was striped black and white (ish) wriggling around on my lobster.” The reader said that it wasn’t a maggot, and again mentioned that the worm was “really thin like a piece of hair.” Naturally, the reader took the sandwich back, but was still worried about what she had found. What type of small, thin worms might be found in a piece of lobster?