LOL reminds me of what happened here.
A vehicle was during on a country road and came behind another vehicle which was going the sped limit.
The vehicle behind went around and flashed his lights and started wagging his finger at the driver in front.
The vehicle goes in front only to see flashing lights behind him now.
Turns out he car behind who first flashed the flights actually flashed the lights at a undercover police car and the car who first flashed was a fake.
driving not during