The clues below will lead to phrases that have repeated words.

1. Schoolyard taunt about an alleged fabrication
2. Mork's sign-off on a classic sit-com
3. Fading away, as a ship on the horizon
4. Macbeth's metaphor about the futility of life
5. All talk, but no action

Answers:

1. "Liar, liar, pants on fire!"
2. Nanu nanu 
3. Going, going, gone 
4. "Out, out brief candle!
5. Promises, promises