Определение и Значение "[have] a sweet tooth"

What is the origin of the idiom "have a sweet tooth" and when to use it?

The origin of the idiom "have a sweet tooth" is not definitively known, but it likely stems from the simple idea that someone's teeth would be more prone to cavities and decay if they consumed too many sweets. This idiom is commonly used to describe someone's fondness for sugary treats and has been a part of the English language for many years.