//example: dirt complex- He's always playing in the dirt and mud. Also, for some reason he gets happy when his "rig" gets dirty?
Answer: He must've gotten yelled at a lot when he was a kid to stop playing in the dirt. So now that he's an adult, he plays with his truck in the dirt. It's a simple case of dirt complex.
Complex- a group of repressed desires and memories that exerts a dominating influence upon the personality