How can I deal with this guy?

Question

Ok so I'm going into high school and my friend is starting to do some changes. Ok so I'm a 80's esq rocker, I wear a lot of skulls and rock tees. Ok so now he says that he loves avenged sevenfold and is dressing in things with skulls on them and dark, like me. When my friend was taking pictures of us i was doing the rock symbol at the camera and he started doing it. Now he has been listening to System of a Down ever since I have! ITS DRIVING ME NUTS!!!! How can I deal with it?

Answer 1

He looks up to you, if it makes you uncomfortable tell him how he is making you feel and ask him to stop, or start mimicking him, annoy him, he will get the point.  

Answer 2

Be glad he likes your music, I like it when I get a girl listening to the same thing I listen to.

Answer 3

Imitation is the finest form of flattery.