The sound is similar whether I rub clean hair together or my finger over a scrubbed pot.
In: Other
When a surface is dirty, there is often some kind of grease, oil or other stuff that lubricates the surface, allowing your finger to glide smoothly. When that surface is squeaky clean the oil or grease has been removed, causing your finger to stick to the surface. As you drag your finger across the surface, it sticks and breaks free over and over, which causes the squeak.
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