my parents kept telling me to stop smoking so i said "ok" and never have, and also, they obviously know i smoke it cuz of them telling me to stop, and smelling it, and finding my pipe. The funny thing is, about 3 or 4 times now they've said to me "now tell me truthfully and look me in the eyes, do you smoke marijuana?" and every time I just said "no!" and once said "of course not, i wouldn't dream of it!" (i was pretty blazed lol) and after i kept saying i didn't smoke it they just walked off looking disappointed that they have nothing on me, so it kinda worked out, now i just smoke whenever and don't even think about getting caught