I can pop my hips two ways.

The first, I think more common, is by crossing my feet, then pushing the crossed feet against each other.

The second way is harder to describe and cracks a totally different part of my hip. I do it by twisting my upper body against my hip, then bending my upper body downwards a little bit. It twists something out of alignment in my upper thigh, and can be painful, and isn't the most satisfying crack, so I don't do it often.

My loudest is my knee cracks. Not the ones in the kneecap that you get from extening your lower leg. It's the ones deep inside the knee, which I crack by twisting and bending the whole leg. By far the loudest.

Hi there! First post.

I sometimes achieve the "secret base-of-thumb crack" by pulling straight out on my thumb.

But what's really weird is this: pulling straight out on my thumb usually gives me a nice ELBOW crack. It doesn't work if I pull on the whole hand, it has to be just the thumb. It doesn't always work, but it can be really nice.