Trousers lines.

Now it’s a normal thing. But what is the reason of it? The question is difficult. This lines appeared while industrialization in the 19th century in Europe when the massive production of cloths was established.

After the transportation, these lines become a part of pants for good so people made do and turned this into a benefit.

Pockets in ladies underwear.

The one of the biggest interest. Many people think that such pocket is for hiding something precious, but it is nothing more than a tale.The reason is about health, and this extra layer must be a soft cotton cloth placed there to make the underwear more comfortable.

READ MORE: 6 moves that flatten your belly in 2 weeks

Hole in the ballpoint pen cap.

It is a common misconception that this opening is made for air to enter the lungs if the cap is stuck in the trachea. But it is not so. If you choke with such a cap (and anything else), the mucous membrane begins to swell. This small hole is created to prevent the cap from sucking into the mucosa.

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