A fake police officer had the bad luck to pull over a real one in St. Louis, authorities say. Police say Nicholas Keeton, 20, was driving a Chevrolet Impala decked out with flashing lights and a siren when he pulled over a motorist and falsely claimed to be a St. Louis police officer around 12:30am Thursday, per the St. Louis Post-Dispatch. Unfortunately for Keaton, the man he pulled over was Andrei Nikolov, a real St. Louis police officer who was off-duty at the time, police tell the Riverfront Times. After Nikolov called for backup, Keeton was arrested and charged with impersonating an officer. (This has happened before.)