Nelson Muntz is the bully on The Simpsons and is voiced by Nancy Cartwright. Nelson is probably best known for his class "Hah Hah" laugh he does at everyone.
Though Nelson is typically foun bullying Bart and other students, we've also seen his softer side as Lisa's boyfriend and even as Bart's friend.
Goon #2: Nelson, you're bleeding.
Nelson: Nah, happens all the time. Somebody else's blood splatters on me. (Sniffs) Hey, wait a minute. You're right. (to Bart) You made me bleed my own blood!
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Nelson [about the school's ancient computer]: My stroked out grandfather has more memory tha that thing
Milhouse: How's he doing?
Nelson: Better, thanks
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Homer: (Wearing glasses) The sum of the square roots of any two sides of an isosceles triangle is equal to the square root of the remaining side!
Man: (From inside a bathroom stall.) That's a right triangle, you idiot!
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Mayor Quimby: And, uh, may the Force be with you.
Leonard Nimoy: You have no idea who I am, do you?
Mayor Quimby: Sure, I do. You're one of the Little Rascals, right?
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