You get a megaphone and start yelling about what a genius you are. After an hour of that the topic segues into geodesic domes, crop circles, and ideas for the synthesis of a "hyper-beneficial heroin analogue".
Since no one says anything you assume no one is around or bothered by your use of the megaphone. But really no one wanted to hurt your feelings by telling you that you were bothering them. They did not trust you to be psychologically stable enough to know that you are a fool.
They are all late for work and do poorly at their school the next day. You feel just awful.