Weakness

Last night, we were reading Wizard of Oz, the children version. Somewhere along the line, Lucas brought up the word weakness.

Lucas: The witch turned into paddle of water after being splashed with water is the witch's weakness, right?
Me: Weakness means you are not good at it. Your weakness is you talk to much and don't listen well.
Lucas: And your weakness is you scold too much!

Dang....see how my kid give it back to me.