A person who feels the need to act like they know it all. They are annoying to be around, and try to compensate for the fact that they are not cool in any way. When trying to prove they are more intelligent than you, they may foam in the mouth and have mini seizure.

It can also be used to refer to a person talking pure nonsense about things they have no idea about

Someone who is possessed by clout chasing. The original human is now gone and a demonic entity that feeds on clout is all that is left. An empty shell with no control of their actions, forced to blindly react to situations they think will bring them attention.