Related:

• I know and I know you know I know.
• Don't I know you?
• I am one of the greatest liars in the English language- -I wouldn't be telling you this if I didn't know it wasn't true.
• Faith is when you believe in something that you know ain't true. -- Anon.
• Wisdom is knowing what to do with what you know.
• Picard: "Q, what is it you really want?" Q: "Well since you know so much about the Q, I thought you'd be the perfect person to introduce me to the child.
  Let her know that she can...trust me." -- "True Q", Stardate 46192.3...
• Found it," the Mouse replied rather crossly: "of course you know what 'it' means.
  "I know what 'it' means well enough, when I find a thing," said the Duck...
• Lisa: Are you Rory B. Bellows? Rory: Yes. Bart: How about Krusty the Klown?
  Rory: Sorry, I don't do impressions. Bart: Well, if you're not Krusty, how come you have the exact same signature as him?...