alrite dude,im 20 now and a couple of summers ago my parents found joint ends in my room(no one smokes in the house,getting rid of them is tricky,theres only so many i can throw into next door neighbours garden) they got more freaked out about me smoking and burning the house down than anything,i think in time parents come to accept that your going to do it anyway,its not openly talked about but my parents realise i could be doing a lot worse...i used to think i hated my parents but now im a little older we get on really well.id count yourself lucky you have two parents,so there a bit anal at the moment,there just worried,it will pass