<human>: Holy shit. I just had the worst interaction with my brother, and he didn't even seem angry. I am in highschool, he is taking a semester off from college. My whole family knows that he smokes weed, but I dont smoke. I found weed on his windowsill, and because he was visiting his college friends in another state I told him the story. He said it was really old, and I should flush it. I felt like it was a waste of 7 grams of what looked like good weed, but I did it anyway. He called me about 30 minutes ago asking if I could look under his sheets for some stuff that he had left. I said yeah, and asked him what he was looking for. He said 2 bags of weed that he had left in his room. He then went on to describe the two bags I had flushed earlier. It was $120 of high quality stuff. He tried to assure me that it was his fault, but because I am constantly worried I blamed myself. I cant get over the fact that I flushed $120 of my brother's weed.

Can you summarize the given text in a few sentences?
<bot>: I was accidentally told to flush $120 dollars of weed, and after figuring out I flushed his stash my brother didn't react.