Smash it against the wall and scar tissue will build up.
Wow have you thought about your questions at all?

Re read them in another 4 of 5 years when you are around 20 and Ill bet you will think they are dumb.
WHY would you want to screw up your entire health trying to do something like that at such a young age? You have YEARS left of natural growth. Anything you take now to try to speed that up or change it will only cause you hare and more than likely STOP any more natural growth.
BTW it's also called VERY bad Photo shop. All they did was make the photo wider and it looks like something a 3rd grader did. Nothing in the photo shows any signs of his head or anything getting bigger. It's due to a different angle and photo stretching. The first picture they did just the opposite, it's made narrower.
Now go finish the 7th grade, try to get above a C average and hopefully you can become a productive member of society someday or Im going to tell you mom on you for pretending to be over 18 and playing on an adult site. She will probably tell you dad to take you out behind the shed and tan your hide.
If not DSM will do it for him Im sure.
