Wisdom tooth

Just finished brushing my teeth and noticed that my upper left wisdom tooth (yes, I got to keep mine!) decided to not be straight. All my wisdom teeth came in straight...all of them. All of them were straight the last time I checked, which I admit is not that often. I have had them for years and the dentist never said anything. But now my upper left wisdom tooth is at about a 20º angle from plumb.

Weird.