Grampa wins an award for an episode of Itchy & Scratchy that Bart and Lisa wrote in his name.
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The Simpsons Season 4 Episode 19 Quotes

Lisa's Brain: Poor predictable Bart. Always takes 'rock'.
Bart's Brain: Good ol' 'rock'. Nuthin' beats that!
Bart: Rock!
Lisa: Paper.
Bart: D'oh!

Homer: Alright brain. You don't like me and I don't like you. But let's just do this and I can get back to killing you with beer
Homer's Brain: It's a deal.