When a person believes everything revolves around them.
The name of the complex originates from Disney's "The Emperor's New Groove", where the main character "Kuzco" is very self absorbed.
Person 1: "So, Omar called me last friday!"
Person 2: "Omg, did he say something about me?"
Person 3: "RAH fam, you have such a Kuzco-complex!!"
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Lend: "Are you talking about me?"
Hater: NO! No one talks about you!
Other hater: Uuugghr YOU have a big kuzco-complex stupid LEND!