I've just bought a whole chicken from a supermarket. Sticking out of one end was what looked like a worm. I pulled it and it came out - it still looks a lot like a worm. It's a long tube maybe 4 inches long, about half a cm wide and hollow with ridges on like a worm looks like. Both ends look as if they've been cut.
Is it some bit of a chicken I've never heard of before, or should I take it back and complain to the shop?