Give yourself a thumbs-up, then take a closer look. If your thumb’s tip extends back toward your knuckle more than 50 degrees, you may have hitchhiker’s thumb. The nickname replaces its more technical ...
Thumb Shape Personality Test: A straight thumb is a thumb that does not bend backwards past the first knuckle. This is the most common type of thumb. A curved thumb, also known as a hitchhiker's thumb ...
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