Related:

• Bob: Who is that? Why, it's Bart Simpson! [calling] Hello, Bart!
  [Bart ducks] He's just a little shy because I've tried to kill him so many times....
• Bob: You do know I used to have a...problem with trying to kill people.
  Cecil: Goodness! I had no idea! For you see, I have been on Mars for the past decade, in a cave with my eyes shut, and my fingers in my ears....
• Cecil: At last I'm going to do what Bob never could.
  Kill Bart Simpson! Bart: Throwing me off a dam?...
• And now, to kill you. There may be a slight ringing in your ears.
  Fortunately, you'll be nowhere near them. -- Cecil, "The Brother From Another Serie...
• Cecil: I forgot to mention, I'm planning to blow up the dam with you inside.
  Bob: Well, obviously. -- "The Brother From Another Serie...
• You've brought shame to this family, Cecil. Oh, I don't relish having to write the Christmas letter this year.
  -- Sideshow Bob, "The Brother From Another Serie...
• Cecil: I have the '82 Chateau Latour and a rather indifferent Rausan- Segle.
  Bob: I've been in prison, Cecil. I'll be happy just as long it doesn't taste like orange drink fermented under a radiator....
• Krusty: Number 73, you're next. Make with the laugh-laugh.
  Cecil: [clears throat] [meekly] Hey, children. Meet me, Sideshow Cecil....
• Cecil: I'm framing you and I'm doing a really excellent job, too.
  Bob: Wait a minute. This is all because I got to be Krusty's sidekick instead of you, isn't it?...