Mount one of these in your rear window? Neon style LED wall art script saying “chill”

Real answer: double tap a light (beams, brakes, or hazards) because most things you would say to them are two beat’s long:

• “Thank you”
• ”Sorry”
• “My bad”
• ”Go on”
• ”Nice drift”
• ”You drunk?”

because most things I would say to them are two beats long

LOL. Doesn’t that mean it’s completely ambiguous? There’s plenty of awful things you could say in 2 beats.

I imagine that people flash twice because once could be a mistake, twice demonstrates intent. Three would make me wonder whether it’s an ongoing flashing light.