it means you've got a rotten apple!
finding an half worm
The Holocaust.
It means you find out that something you thought was a good thing turns out to be a bad thing; usually at the worst possible time.(such as after you've bitten into the apple)
An apple worm is a larva belonging to the codling moth, Latin name Cydia pomonella.
In "Professor Layton and the Curious Village," the puzzle involving a worm and an apple requires you to determine how far the worm has traveled inside the apple. The answer is that the worm has moved 1 inch (2.54 cm) from the core of the apple to the outside, as it travels in a straight line from the center to the skin of the apple. The puzzle emphasizes understanding the dimensions of the apple rather than just the worm's movement.
The apple growled because the worm was trying to get in.
Your Jeweler's Showcase - 1952 Worm in the Apple was released on: USA: 30 October 1952
no a worm is an invertabrate meaning it has no backbone
We are not allowed to get too gross on here, but here are some that might be acceptable: Q: What is worse than finding a worm inside your apple? A: Finding only half of a worm. Q: How do you know you haven't cleaned your refrigerator in ages? A: The food has more hair than you do. I only tasted escargot twice. Once on the way down...
apple sause2
three years.
a cartoon worm