Many of us have a sweet tooth. If sweet tooth is a new idiomatic expression, suppose I explain. If you have a sweet tooth, that means you like sweet foods: cheesecake, apple pie with a scoop of vanilla ice cream, brownies with walnuts, carrot cake, chocolate chip cookies and chocolate mousse.
This is Katie. She makes sandwiches, salads and desserts under the dome. When Katie first started working here she thought, “Wow. I have a sweet tooth. This is the perfect environment for me. I can snack on all the brownies and chocolate mousse I want.” That was six months ago. Katie ate so many sweets that her sweet tooth disappeared. These days she prefers an apple or a stick of celery.