She was always in this business for the LOLs. (screengrab via Mirror Online)

This Shanghai bank teller was caught on security camera cracking up in the midst of an attempted robbery. Why? Some doofus just threatened her with a meat cleaver. In addition to this not being particularly terrifying to someone sitting behind bulletproof glass, the guy took a cell phone call mid-robbery. (He told the person on the other end that he was busy and they should call back later.)

The man was quickly disarmed by security and taken into custody for psychiatric evaluation. There it became clear that he didn't have a psychiatric problem and wasn't on drugs. He simply needed some money and didn't think through his plan very carefully to get it by robbing a bank. Hey, I would have thought that big-ass knife would have done the trick, too.

Sources: Mirror Online | h/t Kotaku