Do you have video game stuff to sell? Other than that, I'm with Jokerz. Offer to wash cars for CHEAP. Of course, since you are young, they will hopefully pity you and give you more money. I used to do that when I was your age, and asked for $4. Then, if I did a good job, they would usually give me around $10-15! There was this nice old lady who used to give me $25 every time, even though I kept quoting her $4.
But if you want it NOW, I suggest hocking everything you own!
"I attribute the quarrelsome nature of the Middle Ages young men entirely to the want of the soothing weed."
-Jerome K. Jerome(1859-1927),Writer