It's called Alaaf Gebrook.
I am not sure how to translate the word "Alaaf". It's typical for these parts, up to Cologne in Germany, and you use it like the spanish word Olé. To be used as greeting, exclamation or expression of approval or enthousiasm. But only at Carnaval.
"Gebrook" is the local lingo for Hoensbroek.
The link: http://www.alaafgebrook.nl/