Face, meet leopard. Leopard, meet face.

[jimbob]

And one stands in line while the others race around doing the shopping, dumping everything on the conveyor when the lone guy is up to bat.

The guys around here use self checkout in order to 'forget to scan' half their stuff, or at least the most expensive items.

That too.

 

[bruto]

Being unfamiliar with this experience, I am curious why?

As Jimbob says, it's because they are buying the next week's groceries for a lot of people.