Well, it sure is a sign of your addiction, I can say that without doubt. I will need you to take a picture with better resolution and post that. Right now I can't make out details. For good measure, put a common reference like a ruler or a coin for comparison and tell us where you found your specimen, if it is magnetic, if it is heavier than a normal rock and how hard it is. My guess is that it is compacted rock from sediment but the questions being answered may help to narrow the identification somewhat.