10. Broken pools balls inside a bocce ball
Someone broke a ball playing bocce (which takes some considerable strength) to reveal pool balls inside.
The stuff inside is called “regrind” and one commenter explained that “Regrind is any material that has been processed once and can include any material cleaned from the mold or any rejected parts.” It’s used to cut costs but when larger pieces are used it can increase stress at certain points and make objects like this more prone to cracking.
