Don't worry, 3/4th of my country doesn't understand us either.
Don't ask me why, we can perfectly understand the other 2/4 (the other part is French, fk French - I don't understand that shizzle either much).
Besides, we can speak "plain" dutch if we want to :P generally used for customers or strangers.
Edit:
Press the subtitle button
I'm really starting to dig these guys - only recently "discovered" them.