Sweet 17, or is it?

Today stunk. Someone in my geometry class was messing with me again. I can catch someone in the act only 10% of the time, and they've been doing this since 5th grade. I can't tell anyone what, specifically, they're doing, for fear of making it worse. How do I know that someone would read this, track me down, and ruin my life again?

About the title: I will be 17 at 11:02 PM EDT tonight, and honestly, I don't feel any different.