Impulse buy at a checkout counter

This time, we got "Impulse buy at a checkout counter" crossword puzzle clue. Next we will look for a few extra hints for Impulse buy at a checkout counter, 3 letters answer". Finally, using all gathered information, we will solve Impulse buy at a checkout counter crossword definition and get the correct entry.
Similar crossword puzzle definitions: 

Orbit, e.g.;
Juicy Fruit, e.g.;
Dubble Bubble or Hubba Bubba, for example;

Try this 3 letters answer: GUM


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