You are DNBU. I loathe people who know everything about everything. They all, strangely, appear to be born with a mahoosive mouth but not even a single functioning ear.
I would like to invent a flashing bullshit hat which you can stick on the head of a bullshitter every time they get going. Then it would suction itself to the scalp until they stop talking cack. They'd soon learn.
Pavlovian conditioning is a wonderful tool.