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|The Adventures of Jimmy Neutron: Boy Genius|
|"Grumpy Young Men"|
|Season 2, Episode 22B|
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|"The Retroville 9"||"Operation: Rescue Jet Fusion"|
To get a rated M video game, Jimmy, Carl and Sheen use Jimmy's new age accelerator to make themselves into 18-year-old's. Unfortunately, Jimmy's time barrier source causes them to turn into old men. They must find some titanium to change back to normal or else they'll turn into dust.
- When they are old, Jimmy, Carl and Sheen will get Alzheimer's.
- This is the second time Carl turns old. The first was in Granny Baby.