What is the fastest way to lose 20 pounds in two weeks?!

What is the fastest way to lose 20 pounds in two weeks?

I'm not obese, but I'm not the skinniest person on the block.
Right now, I weigh 137 pounds and I'd like to be 120 or lower.

Does anybody have any advice that can help me drop it quickly?

I'd like to be able to lose it and keep it lost before school starts up again.

No, I don't want to become bulimic or anorexic.
I HAVE had an eating problem before.

Your advice will be much appreciated. :D

1 week ago
I know its not healthy to lose that much in two weeks.
I'd like to lose it before the end of July, though.

My day usually consists of:
-No breakfast
-No lunch
-Light snacks
-Regular dinner

And I exercise for about an hour, 4 times a week.

I don't have the money to get a gym membership.

Still- I'd like some advice on how else to help it.

Thanks for your kind advice.

stop being a little piggy