Subject: The helix form of excreted fluids.

This is indeed an odd question.  I will fully understand if this doesn't get 
answered.  

Truth be known, this question comes form my standup comedy routine.  Much of my 
gags come from observation.  I'm curious about the answers. 

When I urinate, the "stream" forms a helix.  Why does the flow of the liquid 
rotate when it exits the body?  How can it continue rotation after it has left 
the body?  Another question is why does the stream sometimes split into two 
streams?

I understand that these questions are rather "blue".  I do, however, wonder if 
there is a scientific explanation for it.  

The question I'm asking is not true science, and is probably not fit for most of 
your readers.  I do a part of my routine about the "helix" of urine.  It is one 
of the aspects of being human which everyone observes, but nobody knows why it 
exists.  It makes for good comedy.  

So I'm asking why it exists.  What is the science behind that phenomena?  

-side note,  I know this is a very odd question.  I apologize if this is beyond 
the realm of the MadScientists. Even if someone could e-mail me an idea of how 
it happens, I would appreciate it!-

Re: The helix form of excreted fluids.