Do you still believe the blue side of the eraser can erase the pen? False - its purpose is to erase a pencil, but in case you're writing something on heavier paper. The blue side can remove the smudges you see after using the pink eraser, too. It's just one of many examples of everyday things hiding unexpected secrets. From red mesh bags to ridges in toothpick tops - they all have a tale to tell!

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