Corky James "Jimbo" Jones is the leader of the gang of bullies at Springfield Elementary.  Jimbo is normally seen in his signature purple knit hat, black t-shirt with skull, and jeans.

Jimbo Jones Quotes

Jimbo: You let me down, man! Now I don't believe in nothin'! I'm goin' to law school!
Homer: NOOOOOOOO!!!

(Mayor Quimby address the comic book convention.)
Mayor Quimby: You might say I feel like....Radiation Man!
Jimbo: That's Radioactive Man, jerk!

The Simpsons Quotes

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!
Homer: D'oh!

Homer: There's a $10,000 bill in it for you.
Barney: Oh yeah? Which president's on it?
Homer: Uh, all of them. They're having a party. Jimmy Carter's passed out on the couch.