Negative effects of cracking your knuckles?

I have the habit of cracking my knuckles, and whenever I do it infront of my mom, she jumps on me about how I’m going to get arthritis, enlarged knukles, and other nasty, rather-they-not-happen-to-me things. Is this all true? I also crack my neck, though not as frequently. Any negative effects from this?

Cecil speaks.

Cecil speaks.