If a person has a sweet tooth it means they like eating sweet food very much: they like sugary food such as chocolate, cake, ice-cream and sweet biscuits.
Examples of use:
1. My friend Eliza has a sweet tooth and she finds it very difficult to stay slim.
2. I have a sweet tooth and sometimes I crave chocolate!
Can you use this expression in a sentence?
Do you have a sweet tooth?
Image © Kat Johnston