Final answer:
To get a flat tire means to experience a car breakdown when a tire loses air pressure.
Step-by-step explanation:
To get a flat tire means to experience a car breakdown. It refers to the situation when a tire loses air pressure, causing the vehicle to become immobile. This can happen due to various reasons such as punctures, tears, or leaks in the tire.
For example, if you accidentally drive over a sharp object and it pierces through the tire, the tire will lose air pressure, resulting in a flat tire. In such a case, you would need to change the tire or call for assistance.