Crazy for a first post, maybe. I've been cracking my joints since I was a kid. I'm now 37. My favorites to crack are my neck and ankles. But the strangest was my pubic symphysis. That's the bottom of your pelvic bones where the two halves come together. It was after my 3rd child was born. I'd sit up and this huge crack would happen. Totally weird!
And if you were a plumber when you bend over there would be another crack.Sorry couldn't resist.