Toot Toot

Board the first car on the metro.  As you exit dash to the driver's window.  The glass is shaded and you will see dimly two figures, one seated and one standing.  Wave and smile furiously.  The train will pull out of the stop.  Just as the driver enters the tunnel, he or she might just blare the horn.  Twice even.  At which point you jump for joy.

Of course it helps to do this in the company of two preschoolers.

Those Hungarians do have a friendly side.  At least the metro train drivers.