The more useful work I do for your pencil marks, the smaller and shorter I become, until I vanish from your desk entirely. What am I?
An eraser
As an eraser rubs against paper to clean up graphite pencil mistakes on homework, friction steadily wears away its material. With every error corrected during class, tiny rubber crumbs fall away until the tool eventually shrinks down to nothing.
About this riddle
Wordplay riddles depend on how words look and sound. Watch for double meanings, hidden words and letters you can move or remove.
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