How do you detect marijuana?

Without trying to sound old, you know you are high if you smoke marijuana. I mean, that's why you did it in the first place. Even if you don't think you are high, you are. Marijuana has an effect on your thinking and actions whether you know it or not. If you have to have someone else tell you that you had a good time then why do it?

You know you are too high when everything slows down dramatically. it almost seems like you seeing things frame by frame. You get paranoid about everything that could happen and it seems like it will happen to you. You are completely unfocused on what is really happening and it feels like you are dayfreaming at 100 mph. Your emotions are very strong. You can't remember what you just said or thinking and you wonder why you are thinking it. Your heart feels like it is about to explode and everthing you say and think is redundant. And when you try to focus on something you catch yourself staring into space. If this is you then you are or were too high lol.