Lately I've been feeling the urge to bite down on something really hard, like a...dog chew toy or something. I know it sounds strange, but it's starting to get really annoying. Every time I do bite on something i get the best feeling in my teeth and gums, it's just so satisfying, I can't explain it really. A rubber bouncy ball was working fine until it flew to pieces :\ Does anyone else ever get this urge? It's strange I know, but I couldn't find any info on it.