Related:

• 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....
• Lisa: Oh, it's hopeless, utterly, utterly hopeless.
  Bob: Oh, I see. When it's one of _my_ evil schemes, you can't foil it fast enough, but when _Cecil_ tries to kill you, it's [imitating her] hopeless, utterly, utterly hopeless....
• Bob: [Angrily] You again! Well, that's it. [ominously] I'm going to do what I should have done a long time ago.
  [at the Simpson home, there is a knock at the door....
• Lisa: Hey, you said we were going to Dairy Queen. Ba
  I lied. Now help me rummage through Bob's trash for clues....
• Lisa: Um, do you know what you're doing? Bob: Lisa, you don't spend ten years as a homicidal maniac without learning a few things about dynamite.
  -- Or icepicks, "The Brother From Another Serie...
• Well, I hope Bob fed you, cause I ate your dinners.
  -- Homer the caregiver, "The Brother From Another Serie...
• Bob: You...you saved my life. Bart: Yeah. I guess that means you can't ever try to kill me again!
  Bob: [sinister music] Oh, I don't know about that....
• You don't have to worry about me, brother. I'm all murdered out.
  -- Sideshow Bob, "The Brother From Another Serie...
• Bart: [holding Cecil's eyes closed from behind] Guess who?
  Cecil: Maris? -- Metahumor, "The Brother From Another Serie...