professor chaos tries to do an evil plan but he learns all of his evil plans he keeps thinking of have already been done on The Simpsons. this drives him mad. the boys meanwhile get "sea people" but do not like them so they give them to their teacher in her coffee, thus killing her. they then try to get their "sea men" out of her.
OK episode, I did not like it as much as I thought I would. The Simpsons references were funny but the sea people plot bored me a little. Final grade for "Simpons Already Did It"- C+/B-