In what is known in the financial world as a 'fat finger' error, a junior banker at Deutsche Bank accidentally sent 6 billion dollars to a single customers account.
The 6 billion dollars was sent to a US hedge fund client - who must have gone a bit dizzy from all those zeros in his account (or maybe he didn't even notice) but, of course, he didn't get to keep it.
Bloomberg reports that the money was recovered the next day and that the error - which happened back in June - occurred when the employee - whose boss was on holiday - entered a gross rather than a net figure.
We can only imagine the unfortunate bankers face when he realised what he had done.
And the client's face when he saw the money leave his account.