Did you parents hand you the shopping receipt so you can see how much you cost them?
Every time there was school shopping, or a big grocery haul my mom would hand me the receipt and say "look at how much is costs to raise you". She would would emphasize how many hours she would have to work to buy certain items. I think she was trying to teach us the importance of work, but it honestly just made me feel guilty. I remember saying sorry alot of the times, and when I went shopping for clothes I would always feel dread, cause clothes can get expensive...
But she would always pat herself on the back because she knows parents that don't do the bare minimum.