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A Flash-Bang is a device used by law enforcement or military personnel to stun people without causing serious injury. Not unlike a firecracker there is no metal or shrapnel that disperses upon explosion. There is simply a loud bang and a large flash of light which disorients any persons within a certain radius. This allows the person(s) utilizing the flash-bang to enter, escape, or take control a situation. A "STUPID FLASH BANG" is a technique used by person(s) who are being investigated or questioned. Said person(s) repeatedly answer any questions asked of them with nonsensical or meaningless answers. Or in some cases the same answers continuously. The goal being to ultimately cause the accuser or investigator to give up the questioning. And therefore end the investigation, allowing the accused to escape while the investigator tries to fathom how someone could be so stupid or, tries to make sense of the answers which cannot be made sense of at any point.
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