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: Hey, you're that drunken posse. Wow! Can I join ya?
Homer: I don't know, can you swing a sack of doorknobs?
Jimbo: Can I!
Homer: You're in. Here's the sack.
Moe: But you gotta supply your own doorknobs.

(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!

(Bart shows the whole classroom the tape for his project called, "How Kittens Are Born: The Ugly Truth")
Bart: and here comes Snowball II. This is the one we kept.
All: EWW!!
Bart: We were gonna keep the gray one, but the mother ate her.
All: EWWWWW!!
Martin: Mrs. Krabappel, he's traumatizing the children!
Mrs. Krabappel: As usual, I agree with you, Martin. Bart, shut that off and take your seat immediately!
Bart: Oh, look! This is really cool. When I hit reverse, I can make 'em go back in.
(The whole classroom screams)