I'm Sorry I'll Read That Again

I want another slice of rhubarb tart,
I want another lovely slice.
I'm not disparaging a blueberry pie,
But rhubarb tart is oh so very nice.

A rhubarb what ? - A rhubarb tart.
A whatbarb tart ? - A rhubarb tart.
I want another slice of rhubarb tart.

The principles of modern philosophy,
Were postulated by Descartes.
Discarding everything he wasn't certain of,
He said I think therefore I am a rhubarb tart.

A rhubarb what ? - A rhubarb tart.
A Rene who ? - Rene Descartes.
Poor mutt he thought he was a rhubarb tart.

Read all the ...
- fade out ...

Tune: The Washington Post
Composer: John P Sousa
Lyrics: John Cleese