Anyone that has been using marijuana for a long time already knows that sometimes the effect is not as expected. Most people use weed to chill out or to have a good time. And for most, it is just what happens. But there is a little bit of a leaning spree needed to have a perfect relationship with the wonderous medicine and curer of many things. Most users will remember at least one time in their walk with weed, a mild onslaught of paranoia. Some could even have had a worse experience. But why does it happen?