Lyrics:

Petula Clark
with Jimmy Hanley & Jack Warner (Film Soundtrack) - 1949


I know a fellow who's a hundred and ten
Who can remember when there were men before then
He looks no older than thirty-three
And folks wonder what his secret can be

It's simply doodle-oodle-day
That is all you have to say
For with a merry doodle-oodle
Every agent caskidoodles right away

When first I asked him, he just tipped me a wink
Puffed at his baccy and then swallowed his drink
Then he confided the magic phrase
That he claimed would keep him young all his days

Simply doodle-oodle-day
That is all you have to say
For with a merry doodle-oodle
Every agent caskidoodles right away

Then finally to prove beyond any doubt
That aging worries we can all be without
My friend the wise centanarian
Turned a somersault and did it again

It's simply doodle-oodle-day
That is all you have to say
For with a merry doodle-oodle
Every agent caskidoodles right away

HANLEY:
He likes the ladies and the ladies like him
WARNER:
They say that he's the tops for vigour and vim
BOTH:
He keeps them guessing and on their toes
With that trick of his that nobody knows

ALL:
It's simply doodle-oodle-day
That is all you have to say
For with a merry doodle-oodle
Every agent caskidoodles right away
Doodle-oodle-day
Doodle-oodle-day
Doodle-oodle-oodle-day