The Simpsons
S7E9: Sideshow Bob's Last Gleaming
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"High-toned voice." Bart, that's it.
I know where Sideshow Bob is hiding.
When Bob broadcast that message, his voice was higher than normal.
And what makes your voice high?
- Tight, binding underwear?
- Helium!
Sideshow Bob is in the Duff blimp!