While shopping in a local supermarket, Jolene Partin came upon an aisle display of cookies and had to have some-immediately. By the time she got to the checkout counter with the rest of her selections, all the cookies were gone. In this case, the cookies were:

an impulse product

Explanation:

When we talk about impulse products we are referring to products that people generally buy on impulse reactions. Generally in a supermarket the aisle just before the cash register is full of candy, chocolates, or other impulse products. Generally impulse products are not expensive so people usually don't think a lot about whether they will buy them or not, they just do it.