User blog comment:Kuzlalala/Lala's Long but Orderly Put Theory about Phineas and Candace's Biological Father/@comment-4037231-20110809025353/@comment-4186892-20110813211035

That would make alot of sense. Or maybe.. this is just a thought. Sarcastic Norm was their dad. That would be why Linda divorced him (he became a jerk) and since he failed, Doof created Norm. Your Candace stress thing might just work here.