[sikander]

Even though aluminum/tin foil are still bad for you (the heat you expose weed to is much greater than what you'd expose food you cook to), smoking with it once or twice won't kill you. You could also probably just bum papers off somebody in the street if you're not 18 and can't just buy them. My underage friends do it all the time.

However, smoking in/around school is a DAMN risky thing to do, even after school. Be SUPER careful or just wait till later.