strange crackling noise at the base of my skull when I'm hungry

Why do I hear a crackling noise in my head and neck when I'm hungry?  It happens whenever I'm really really hungry and the noise coincides with the growling of my stomach.  I've had this as long as I can remember.  It doesn't hurt but it kind of grosses me out to hear something in my own head.  The best way I've heard someone describe it is like the noise a rainstick makes, but I can also feel it cracking.  I've read all kinds of explanations like the electricity in your head, or spinal fluid being heard because of a thin ear bone, or a signal being sent from your stomach because of low blood sugar, even something about chiari malformation.  I really want to know, WHAT IS IT?

[TheAngel4You]

This happens to me too. I can only hear it at night like its inside my head when I feel really hungry. I've been wondering what this is or if its anything to worry about.