What is the origin of the idiom "red as a cherry" and when to use it?

The phrase "red as a cherry" likely originated from the observation of cherries' bright red color, and it is now used figuratively to describe a flushed or reddened complexion, particularly in moments of embarrassment or shame. The comparison to a cherry creates a visual image of a person's face turning red, emphasizing visible signs of emotional discomfort. This phrase is often used to describe embarrassing moments, social blunders, romantic encounters, or situations where someone feels exposed or caught off guard. It can also be used to convey the feeling of being the center of attention or experiencing a sudden rush of emotions.