First, don’t panic. Do not try to spend it—that’s illegal and no fun. Instead, bring it to your local bank or the police. You’re being a citizen scientist—reporting helps stop the fakes from spreading. Think of it as returning a lost puppy; you’re doing a good deed.
The shopkeeper who gave it to you probably didn’t know. Forgive them, smile, and share your new knowledge! You could say, “Hey, I just spotted a counterfeit; want me to show you?” You’ll be the hero of the store, turning a bummer into a bonding moment. Who knew fivers could spark conversations?
