Currently amused by the idea that Aang is a delinquent. Forget punk or prep, he has tattoos, he's constantly destroying public property, he's encouraging kids to run away from home, he's homeless, he has no qualms about lying or stealing, has gotten into street fights, skips school, acts out in class, and he has canonically gone to jail and made friends with the criminals there.

Short of drug use, he is the textbox definition of a delinquent, he just hides it with how fucking cute he is.