Look at it this way, guys. If they're gonna make fun of you for it, they're not worth your time, and they're not your friend anyway. I personally don't give a flying frik frak what people think. All my friends know my favorite game is Pokemon. Some even know I'm a moderator here because I'm so retro nerdy that I actually mod this junk omg. But what I'm trying to say that if it's something you like, you shouldn't have to feel ashamed of it and hide it. It's stupid that you can't show your interest in a game, a fun game for that matter, and get picked on.
A little heads up too: I'm a senior this year and I have found so many people that actually play, even people in my grade. I even got two friends back into Pokemon and now they're insanely addicted. I've seen at least 4 people with the PokeWalker. I have a huge Umbreon on the back of my binder for the world to see. No one has said anything. Ignore them. They're stupid.