In high school a lot of guys worked sacking and carrying out groceries, then if you were going to college you could do stocking and part time checkout. Either way I got to know a bunch of those Grocery Store Zecutives and there were some doozies.
I was lucky enough to work during Nixon’s price Freezes when inflation was going crazy and I could spend all night changing prices on a daily basis. That was the Full employment act for us stockers.
One penny was everything to those guys, and we always took stuff home. Dented cans were always popular.
The best part was swollen cans, full of botulism. Give them some time to swell and you could blow them to smithereens with a .357. That may be why my face is still wrinkle free.
Back in the late sixties, I dated a Safeway cashier. She would call out the price of every item as she rang it up, with nothing to go on but memory. Maybe they all did that. It was amazing.