Yawn. At least I do.

Put something back on the shelf

use a list

Buy stuff we don't need.

open up a package of snacks while shopping and chow down or sample some produce

Price compare, per volume

If the item that you’re buying is 2 for the price of one, put one in the Food Bank bin. Or just buy something for the bin.

go to the store hungry

Forget to buy something they need.

Load the buggy more than half way full.

use coupons

Crash your cart into someone who has parked in the middle of the aisle.

Buy something on impulse