It is an English joke. And it ends with a simple answer : Because. But the tone is everything and the joke is really funny.

Still, I am Belgian and I am claiming out and loud that we, non natives, have new rights on English as a language. It is called Benglish!

And I am extending that claim to new lines of humor : no decent English native speaker will circle around the "Why? Because! Why ?? Be Cause" deaf conversation.
I do (circle around I mean).

So my motto has become : be the cause of things... Change if you please... 
And I apply this motto, because I have to have ONE site, for my various activities:

• As an old business man offering "consulting" services to help people manage
• As a yoga practitioner and "teacher"
• As a person, because it sounds good in conversations

I hope you enjoyed that long joke ;)

B