Wow... interesting thread.. that's for sure. Me... my parents have never caught me in the act of toking up, and if they did i think i'd be kicked out of my house for good. I am 17 so i can relate to how you feel man... but i do have a few tips for you. Until recently, when i smoked i would use a toilet paper roll with dryer sheets in it, open my window, blow my smoke out my window (Which was a good or bad thing, depending on the direction of the wind) and shut the window when i was done, and spray my room with tons of smelly shit. My dad did come in once while me and my older brother were just done smoking and asked what the smell was, we just said it was his jacket cause he was at a bar and he bought it (my brother is 24... he was visiting for the day). Recently I have found a perfect plot to smoke my weed in my room with my parents never finding out. I cleared out my entire closet cept for a few select things (luckily i have a walk in closet), put lantern in there, black lights, fog machine, and bean bag chairs, and smoke my reefer in the closet... some of the time i'll use the toilet paper roll with dryer sheets just to be on the safe side, when i'm done i spray my closet with cologne, walk out, shut the door, and it's all good. The cologne gets rid of the weed smell, and my room never smells at all.... my best advice for you, use a bong or a pipe (preferrably a pipe, easier to hide... i hide all my weed and pipe in a computer game box), and clean out your closet and smoke in there. If you do use a pipe, after you're done with every hit hold the lighter over the top of the bowl to make sure no excess smoke gets out, and blow it out of a toilet paper tube with dryer sheets. That's the best advice i can give you, and good luck man.