Related:

• If you knew what Mona Lisa knew, you'd smile too.
• If you knew what to say next, would you say it?
• You wouldn't be so smug if you really knew what was going on.
• If you knew it, when did you know you knew?
• I always knew you had personality. The doctor said it was hyperactivity, but I knew better.
  -- Homer is pleased that Bart's running for class president, "Lisa's Substitute...
• If I knew what was going on, do you think I'd be here?
• I knew I had some reason for not killing you...Now what was it?
• Willy: {Spill it! Where's your brother?} Skinner: {You'd better answer him, Lisa.
  He's a bad man. [Lisa giggles] What are you laughing about?...
• Hutz: How could you have seen all this, Bart? Weren't you supposed to be in school?
  Bart: [slowly] I sort of skipped school. Skinne...