The first time that a foodstamp purchase has actually aggrivated me EDIT
I'm not sure why, but it did. I am a cashier. Yesterday a guy came in and bought 116$ of soda. I asked for his store card because it gives discounts (Free to get) and he said he didn't have one. I told him that they were free and that it'd knock about 20$ off since we were have a sale on the soda he was buying. His response "No thanks, I don't need it." and then paid with foodstamps...uuuuh yes, I think you DO need it.
It's not about the SODA, it's the fact that he wouldn't want to save 20$ on the purchase.