Related:

• Homer: I'm just a big fool. Karl: Oh no, you're not!
  Homer: How do you know? Karl: Because my mother taught me never to kiss a fool!...
• Homer: I'm just a big fool. Karl: Oh no, you're not.
  Homer: How do you know? Karl: Because my mother taught me never to kiss a fool!...
• Mike Scioscia: [pushing a wheelbarrow of glowing green goop] Karl
  [pulls up beside him with his own wheelbarrow of glowing green goop] Hey, Scioscia....
• Karl: You don't belong here. You're a fraud and a phony, and it's only a matter of time until they find you out.
  Homer: Gasp! Who told you? Karl: You did. You told with me with the way you slump your shoulders, the way you talk into your chest, the way you smother yourself in bargain-basement lime-green polyester....
• Karl: You don't belong here. You're a fraud and a phony and it's only a matter of time until they find you out.
  Homer: (gasps) Who told you? Simpson and Delilah...
• Brain damage is all in your head. -- Karl Lehenbaue
• Homer: The alien has a sweet, heavenly voice... like Urkel!
  And he appears every Friday night... like Urkel!...
• Homer: [snores] Bart: Look alive, Simpson, I'm not paying you to goldbrick.
  Homer: [wakes up] Uh... Yes sir. Bart: Now get cracking on my long division, and don't forget to show your work, Simpson....
• Bart: Mr. Burns, I don't want to seem ungrateful, but I want to go home to my family.
  Burns: [sighs] I was hoping I wouldn't have to tell you this, but....