Missing My Nemesis by Phineas And Ferb
Without your schemes my life it seems is empty,
I spent all my time keeping you from doing wrong
You were my only nemesis
I'd foil your plans, but still I miss
The moments when we didn't get along.
So search your heart dear Doctor D
And I am sure that you will see
That you were always meant to be
My only lifelong enemy
But now your doing battle with a panda from Seattle
I miss the moments when we didn't get along.