I never hid anything and I think that pissed off my parents a bit more. One day I was smoking in the kitchen when I was 15 and my dad walked in, he wasn't particularly pleased. Also, when I was 17 after disappearing for a couple of days (mad party, so worth it) I came back home to receive a MAJOR bollocking on account of I'd disappeared and (my friends and I) left empty bottles of J.D, Bacardi, Morgans Spiced and Vodka lying around my room.
After that last one there wasn't much point in trying to hide anything, I'd done the worst and received the worst, although I do hide dope when I have it, not out of not wanting to get caught, it's just better that I don't rub it in their faces.