Sylvia - That's just a Wilhelm Warbler. Annoying all over the place, but totally harmless.

Episode: The Heebie Jeebies.
Sylvia - That's just a Wilhelm Warbler. Annoying all over the place, but totally harmless.
Sylvia - That's just a Wilhelm Warbler. Annoying all over the place, but totally harmless.
Sylvia - That's just a Wilhelm Warbler. Annoying all over the place, but totally harmless.

harmless.