mc5 - I'm not wearing any pants!

Take a familiar (or at least famous) quote (e.g. "Don't go around saying the world owes you a living. The world owes you nothing. It was here first." by Mark Twain). Then find a good stopping point (e.g. "Don't go around saying"). After this, add the phrase, "I'm not wearing any pants (e.g. ""Don't go around saying, "I'm not wearing any pants!").

HAL 9000

I'm afraid I can't do that Dave. I'm not wearing any pants.

Stevie

I shall not fear. Fear is the mind-killer. Fear is the little-death that brings total obliteration. I will face my fear. I will permit it to pass over me and through me. And when it has gone past I will turn my inner eye to see its path. Where the fear has gone there will be nothing. Only I will remain, not wearing any pants.

B Dylan

"How many roads must a man walk down, before he's not wearing any pants?"

Dan

We can dance if we want to. We can leave our pants behind. Because your friends don't dance and if they wear pants, well, they're no friends of mine. We can dance. We can dance. Everybody take off your pants.

Stevie

I'm Burlington Bertie, I rise at ten thirty I saunter along like a toff
I do a short dance in my moth eaten pants then I do it again with them off.
Officer.