What should a mom do if her baby cries because he wants Coke and he only stops crying if she gives him some Coke?

A mom once went to the bathroom and left her glass of Coke at the living room and her baby drank some Coke from there. And now he wants more and he cries because he wants to drink Coke everyday.

What should a mom do if her baby cries because he wants Coke and he only stops crying if she gives him some Coke?
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