i think they honk their horns for everything i've noticed they do it when someone's getting married too, even when they win matches here in Doha. Honking goes back to the time honks were first invented, a man would get into his car and if he was happy he would honk his horn to let the world know that he is happy..this tradition was passed down from father to son over the years. :)

Where there is Fire...There is Coke. Where there is Rum..There is Smoke - Sir Smoke-a-Lot