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Platypus is right. The only thing to do in your situation is to KILL YOUR PARENTS! I'd reccomend using a plunger or putting Mr. Clean in their water when they arent looking.
I've got to agree with Graph and NoChowderForYou. I read somewhere on this site that pot should enhance your life, not be your life. If you're sitting in a camp for 8 weeks (which is nothing in the grand scheme) and can't stay straight or even imagine staying straight for that time, then I'd say you have the wrong perspective on your pot use.
Having lost my dad not long ago, I can only say that a parent is the most unique relationship in your life - for better or worse. So...my 2 cents is parents first, pot second.