"Laughter is the best medicine" is a common saying or expression that suggests that laughter has the power to improve one's physical and mental well-being. It is often used to encourage people to find ways to lighten their mood and bring joy into their lives, especially during difficult or stressful times.
In terms of figures of speech, "laughter is the best medicine" is an example of a proverb, which is a short, familiar saying that expresses a common truth or practical advice. Proverbs are often used to convey wisdom or practical lessons learned through experience, and they are often passed down from generation to generation.
Other examples of proverbs include "actions speak louder than words," "a picture is worth a thousand words," and "don't count your chickens before they hatch." These proverbs are widely recognized and understood, and they are often used to convey important lessons or truths in a concise and memorable way.