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!").

penelope

'I know it's only rock and roll, but I'm pantless, pantless, yes I am': Mick Jagger & the Rolling Stones.

Stevie

Oh he sits at the corner of Beggar's Bush
And the crowd looks on in a trance
As the dolls at the end of the plank do a dance
And he croons "I'm not wearin' me pants"
La-la-la-la
Come day, go day
Wish in me heart it was Sunday ... etc etc

Plump

Michael Caine : You are only supposed to blow the bleedin drawers off cos he ain't wearing any pants

Stevie

The Thief Baggins: What have I got in my pocket?

Gollum: Not fair, my precious! It hasn't got any pocketses! It isn't wearing any pants!

A Conan Doyle

"Elementary my dear Watson. I knew this man was about to burgle the offices of the Sunnydale Nudist Colony because he wasn't wearing any pants"