If I wrote here something in English, everybody would understand it - no fun for me.

If I wrote here something in Polish, noone would understand it - again, no fun.

If I wrote here something in Finnish, whole Finland would laugh at me (my Finnish is very lame). Well, that might be fun. At least for Finns.

If I wrote here something in German, it would look weird.

If I wrote here something in Japanese, that would be great fun! Unfortunately, all I remember from classes is a question: "Where is my beer?".



So, there's only one language left:

Exception in thread "main" java.lang.NullPointerException. :P