What to do when given a fake note?

If you suspect you've received a fake note, handle it discreetly and avoid showing it to others. Compare it to a legitimate note, checking for security features. If you're sure it's counterfeit, report it to the authorities, such as local law enforcement, and if possible, take it to a bank for further verification. Do not attempt to use or pass the fake note, as this can lead to legal issues.