the best is when my friend worked at his uncles package store when i was 19. we'd load up the 2 wheeler with 5 or 6 cases at a time, show id at the register which of course showed we were of age than he'd ring up the stuff at normal price in front of the other customers. hand him a $20 for $150 worth of beer. then he'd just void out the sale later.
loading up shoping carts and blatantly stealing from a mall works too.
It's a work in progress. Not from a store/retaurant and not using shoppng carts. Could be a multitude of people responsible and not really traceable.. I mapped this out