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"Snap."
Little spiders spinning webs on the web suddenly ballooned in size, growing from the size of fingernails to as tall as a person, and plummeted to the ground.
Their abdomens swelled, their spider legs thickened, and their entire bodies expanded uncontrollably.
Suddenly, with a few crackling sounds, the person-high spiders burst apart," from their abdomens and legs thousands of little spiders emerged and scurried in all directions.
"Snap snap snap snap snap..."
The thousands of little spiders also began to swell, growing larger and larger as if following their mother's example, each one developing a large pregnant belly.
The pregnant bellies burst open, one begetting a thousand, a thousand a million.
Spider births spiders, spiders crush spiders, spiders eat spiders, spider legs, spider mouths, spiders devouring spider marrow...
As far as the eye could see, there were spiders everywhere!