The Adventures of Jimmy Neutron: Boy Genius, Season 2

Jimmy:
I can't believe Carl and Sheen turned into a real vampire and werewolf! I've got to capture them and turn them back. Goddard, access vampire data so I know what I'm dealing with. [Goddard does so] "Vampires feed on the blood of the living. They can turn their victims into vampires and are repelled by garlic. They can only be destroyed by a wooden stake driven into their heart." What have you got on werewolves?

Miss Fowl:
[dressed as a fortune teller; mysteriously] Even a man who is pure of heart, and says his prayers by night, may become a wolf when the wolfbane blooms, and the autumn moon is bright.

Jimmy:
Uh… hi, Miss Fowl. How do you know about werewolves?

Miss Fowl:
I was married to one, but that's a story for another day.

Jimmy:
Uh, anything else I should know?

Miss Fowl:
Well, they can turn other people into werewolves by biting them, and they can only be destroyed by a silver…

Jimmy:
Bullet?

Miss Fowl:
Cane, spoon, hairbrush- anything else silver. Okay, Happy Halloween. Don't forget to floss.