It's Saturday, the weekend before everyone goes back to work for 2019. Did you all have a nice holiday?
Today's phrase for you is, "have a sweet tooth".
What does it mean? We use this for someone who likes desserts, chocolate, ice cream or other sweet things.
Example 1
I bake cookies once a week because my husband has a sweet tooth.
Example 2
A. You eat cake almost everyday.
B. Yes! You know I have a sweet tooth.
Example 3
A. Would you like some apple pie?
B. No thanks. I don't have much of a sweet tooth .
https://idioms.thefreedictionary.com/have+a+sweet+tooth