It means different "modules" of your mind have different values, and on reflection you favor one module over the other.

Part of why this still sounds problematic is that we have a hard time unravelling the "superego" (the metaphorical mental module responsible for enforcing nonselfish/pro-social values) from full and complete moral cognition. Thus, many people believe they believe they should be selfless to the point of self-sacrificing, even though, if you cloned them and actually made the clone that selfless, they would not endorse the clone as being a superior version of themselves.