refers to ideas or abstract thought processes that you experience when you are under the influence of cannabis.
high+idea = hidea
1: combining the breakfast and lunch menu at mcdonalds by timing your order right at the time of the menu change. hidea.
A brainwave that hits you when completely intoxicated. Particularly prevalent in the advertising industry.
After my seventh gram of Columbian marching powder I had some seriously awesome hideas for the development of the new campaign!