<human>: So my parents recently discovered that I had consumed a pot brownie. Now this is the second time I've been caught with pot by them, but I was 16 before and I am 18 now. I'm off to college in a couple of months and am generally granted lots of independence. They are angry because they feel that I've betrayed their trust again by doing this when I said I wouldn't. In their minds, marijuana is very bad for your health and leads to failure. I simply want a way to discuss the issue with them and assert my independence to decide what I do with myself while still acknowledging that I live in their home and they pay for my schooling. Any ideas, articles, or approaches that anyone has to offer? Any help would be greatly appreciated.

Can you give me the gist of the text in a nutshell?
<bot>: I need to discuss marijuana in an adult way with my parents who believe it is detrimental to health, mind, and education.