Well, thankfully my friends like Pokemon, so no issues there. As for anyone else...well, I always have a few screenshots of the manga on hand for anyone who utters the sentance "Pokemon is for kids, you shouldn't like it, blahblah". What are these screenshots, you may ask? And Onix getting it's head kicked clean off its body by a Hitmonlee. Pikachu covered in blood and other injuries. Stuff like that. This changes their opinion quickly XD
But no, I will tell anyone real quick that I like Pokemon...but not the show. The show...yeah, thats where all this comes from. Its gotten so kiddie-ish, its not funny. Back in the old days, Pokemon could, you know, beat each other up so badly that they almost die. There was a concept of death. Now...its the opposite. And as we all know, the manga and games are very different from the anime.
And, if all else fails if people refuse to leave me alone after all this, I use the "The games are addicting' card. Which is true, and they agree with me always on that :P