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The phrase "Cowboy boots and jeans" is a colloquial expression for a person who is rugged and independent. It is often used to describe a person who is self-sufficient and not easily intimidated.

The phrase originated in the 19th century in the American West, where cowboys were often seen wearing cowboy boots and jeans. This was a practical choice for cowboys, who needed to be able to move around in the rugged terrain and handle their livestock.

Today, the phrase "Cowboy boots and jeans" is still used to describe a person who is rugged and independent. It is often used in a positive way to describe someone who is self-sufficient and not easily intimidated.