But like honestly, cracking your joints is actually really nice, except for your fingers. 

Cracking your neck is painful when you do it too quickly and randomly, like every other joint, but the neck and ankles are more so.

 Slow cracking feels great, mainly around the wrists and neck.

Cracking your toes feel weird and you'll probably crack your ankles with them, but if you crack your ankles too much, it feels really uncomfortable for the rest of the day. 

The occasional knee crack is kinda nice, but it's uncomfortable when you don't crack it and you can't really control it. 

The Shoulders are one of the best places to crack in the mornings because it kinda loosens your arms, any other time of the day, it feels pleasant. 

Elbow cracks are weird, they just feel weird.

When you crack your tailbone really fast, it feels like you're gonna be paralysed but it's all cool, crack it slowly and you'll probably be fine.

Also when you crack your back ten times in one go.

Also, don't take my advice on any of this, I'm not a chiropractor. This'll probably break your joints more than anything.