Maybe I won't bother ...

Finally .

There are legitimate uses for flashing headlights .

For example flashing from dipped to full beam can warn of your presence on bends and at junctions after dark or to warn of hidden danger during daylight hours.

A flash before overtaking might attract a two-fingered gesture from the driver ahead, but at least you will know that he has seen you.

In fact, his attitude might deter you from an otherwise safe overtaking manoeuvre that could be rendered dangerous by the other driver's actions.

You might not get home quick as a flash.

But you will arrive alive.