I need to lose 100 pounds in 45 days, How can I acomplish this?!

I need to lose 100 pounds in 45 days, How can I acomplish this?

I am a 200 and something pound teenager and i need to lose weight before i go back to school. i need to do this because i need to have more self-confidense. i also need to do this because i have some medical problems and i feel that it is because of my weight that i have bad knees and hips. Also i have a bad family history, almost every one on my dads side of the family has died at a young age(if they were over weight as a kid they normaly die in their late 20's to early 30's, but if the were skinny as a kid and became over weight when they were older they died in their early 60's) and i don't want to die that young so i need help!

The only way to lose that much weight in such a short time is with surgical intervention. There is no physically possible way to lose that much weight in just a month and a half unless you cut your own leg off.