The IQ Test
From Screamer Wiki
"The IQ Test" is a YouTube screamer prank first uploaded in 2007 by user DanielMcCartan.
Description
As the title suggests, the video fakes an IQ tester. It first tells you to say the color a word that represents another color is in. After, it tells you to watch the dot flash and count how many times it does. But the dot will take a maddening time to flash again. Besides, not long after, Regan MacNeil will pop up and scream at you.
Link
https://www.youtube.com/watch?v=xtVXbBa7eFw&list=PLs1BtYXZ8_8PwcLehwDMGGGRTOJp4HuCQ&index=21