Referring to parent model instance.

[eluser]Aken[/eluser]
Parent::method() doesn't necessarily mean that the method is static - you can use this just fine (CI uses it all over with the __construct() method). There's a perfect example of calling a parent method of the same name on PHP.net: http://www.php.net/manual/en/language.oop5.basic.php

If that doesn't help, post some of your code and explain what you're trying to do and what is actually happening.