Trying to sound or look smarter than you actually are has the double effect of making you look extra dumb. Putting on a monocle and saying indubitably is not the same as having a high-functioning brain, nor will having a fake British accent do the trick either. Also, if you want people to think you're smarter than you are, make sure you have a grasp of how the internet works.
Online quizzes can be a little annoying, especially when it's that person who spams them all the time and only uses the quizzes to show off that they are Dumbledore and Luke Skywalker. That's exactly what this Facebooker was trying to do when they posted their 125 IQ score, but they failed to see that the preview image shows his actual score: 85. I'm not too surprised.