Cashier Tales: Of the Concrete Variety

So I was being a crazy person at work today. Once again they put me next to an awesome co-worker of a split superhero/villain nature (her choice not mine - anyone who refers to multiple coats as capes obviously has unique issues). Hilarity ensued. Later on I was bringing through a customer who's total was crazy high - I didn't notice it - they most definitely did. Couldn't figure out where I went wrong - I usually check the produce codes as I put them in. Then I was undone by a great and unexpected source. The bags... the PC points that we have to enter... I never check them because no code is close to it. 53398. It went in as 5398. It went in twice. It went in at 49.99!!! Each!!! As a concrete boot! Why do we have concrete boots in the system? A customer answered that question. It involved mob ties. Day over (say such things dramatically in a mob-ish manner... figure out what that is first... I can't help you with that).