You can tell a lot about a person based on whether they put the "Next Customer" divider down after they've loaded their shopping onto the conveyor. People who don't are nailed on to be selfish cunts in every aspect of their life.
Those growling coffee machines with the fiddly capsules are a grossly overengineered waste of money. Peak coffee tech efficiency was the ordinary plunge pot that traps the grounds at the bottom. It's not possible to make better coffee any other way.
I deliver pizzas. If someone buys a bottle of fizzy pop I shake it up. If they tip me I warn them that the ride over was bumpy so they should be careful with the bottle, if they don't tip me they get covered in pop