Joints

Sawyer swung the TV remote around to show me what he was doing when he
heard a "xxshxxss" sound.

He asked "what do you think that was?

I told him "It was probably your joints. Sometimes when we move a
certain way they make a cracking sound."

He went on "Oh, like when Granddad stretches out his toes."

His association abilities are both comical and spot on.