If you ever go to Amsterdam, ask the people for Leidse Plein. That's where Abdullah performs most of the time.
I met him there when I was pissed drunk and stoned, took his ball and tried to pull of a side-headstall which was the only 'spectaculair' thing I could do at that time.
Don't forget, Leidse Plein ! And don't forget to give him some money or he will "kick you in the nuuuuts" => cartman voice.