One of my best friends just got a job as a bank teller. He's doing on-the-job training right now.
That sounds like a difficult job. What all does a bank teller have to do? 
Most of the job is dealing with customers. But he'll get to do some cool things like checking for counterfeit money and dealing with identity theft.
Those do sound like cool things. Is counterfeit money really that common? 
Yes, I've actually gotten counterfeit bills before! Counterfeiting has been going on for as long as money has been around.