They know that I had done it a couple weeks ago, but they had a "talk" with me about it since then. Tonight they asked me if I had smoked with a friend of mine who had smoked that night and I said no. They are going to make me take a drug test to prove it. I told them that THC would still be in my system from a couple weeks ago. So they told me that I was grounded until my system was clean, but if there was still THC in my system in like a week or so from now then I'm in a lot of trouble because then they'll think I had been smoking tonight.