In which strangers rank each other by intelligence then take an IQ test

In which strangers rank each other by intelligence then take an IQ test. By PewDiePie, the most popular youtuber in the world.

IQ is notoriously hard to judge in day to day conversation and interaction, because IQ is about ability and speed in problem solving, which rarely figures in social interaction. Most of us only have a foggy idea of each others IQ, and instead rely on clues like occupation and education. Stereotypes rule. Which is what makes this video, though slightly slow, so funny:

via Vox Populi