When you stretch your legs, and your knees crack

Is that not normal? I stretch my legs to hear the crack. It satisfies me. I feel dissatisfaction if it doesn’t crack when I try. Same for all my joints.

😀😀😀

My poor old joints hurt me all night long last night. I can’t stand much more of this.

That happens to me everyday, like a glowstick.😆

Both of my knees are fake, so cracks aren't a good sign.