It's the alternate, terrible ending to Charlotte's Web, in which Charlotte's babies, instead of flying off on the breeze, burst forth in the midst of a human-spider battle in a spectacular explosion of scuttling little legs. Warning: may cause spontaneous arachnophobia.
Apparently, this particular spider carries its egg sacs on its body, which is why the spider-slaying videographer was ready with the bug spray. How do you spell "horror," Wilbur? With ten thousand scrambling arachnid babies.
[via Blame It on the Voices]