If you're familiar with "Charlotte's Web", you'll remember that Charlotte (the spider) wrote words like "Humble", and "Fantastic Pig" into her web so that the farmers wouldn't eat the pig, but rather enter him into competitions and throw him parades. Personally, it always baffled me why the farmers weren't freaking out, seeing English words written into a spider's web. You'd think they call in some scientists or something.
Long story short, the farmers were idiots and would do whatever this spiderweb told them to. Any hey, Charlotte had just given birth to a few hundred baby spiders, she was probably hungry, and what food in a barn is more delicious than some crispy bacon?