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A Chinese bank clerk was caught on CCTV camera laughing at an incompetent raider who threatened her with a meat cleaver even though she was behind bullet-proof glass.

Then a second after pulling out the weapon at the branch in Shanghai, dozy De Ke, 28 got a phone call on his mobile phone which he then answered – leaning against the glass to tell whoever it was that he was busy and to call back later.

Cashier Rong Ku, 41, told local media: "I might have taken it seriously if he'd had a gun, and you never know really if the security glass will stop a bullet, but I knew he had no chance of getting through with a meat cleaver. It was a bizarre situation and I just had to laugh especially when he took a telephone call in the middle of the robbery.

"He said 'this is a robbery' in a really quiet voice and then asked me to hold on while he took a phone call."

As he shouted down the phone the security guard came over and asked him what he thought he was doing allowing another customer to walk up behind the meat cleaver waving robber and disarmed him, handing the meat cleaver to the security forces before throwing the man to the ground.

Police who interviewed the man said he had not been on drugs or drunk and that he appeared not to be suffering from any mental problems.

He said he had simply come up with the idea of robbing the bank to get some more money and not really thought it through carefully.

Here are some of the ten most stupid criminals of all time.