Pack things in a bag, as in "Please bag it," the customer said to the checkout clerk. This usage mainly describes packing groceries or other purchases into a bag. [Colloquial; late 1500s]
Abandon something or someone, quit. For example, The class is not very good, so I've decided to bag it. This idiom first became widespread among students. [Colloquial; 1960s]
Be quiet, stop doing something, go away. For example, I've heard enough about that, so just bag it! [Slang; 1960s]
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