|Aliases||Your Cousin Jeffrey - Uncle Leo|
|Family|| Father: Uncle Leo |
|First Appearance||"The Pony Remark (Mentioned only)"|
|Occupation||Works at the parks department|
Notes about Jeffrey
- Jeffrey works at the Parks Department, a career that causes his father tremendous pride.
- According to Leo, Jeffrey has a sense of humor.
- His favorite animal is the leopard; he likes their spots.
- He usually stays home on Friday nights to watch the Nature Channel.
- Jerry and his friends think he looks like a horse.
- Has a close relationship with one of his college professors. Like equals.
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