Kim- There are two parts each repeated: AABB; the second part (B)starts on the 7th chord- mixolydian mode. (Key of G: the second section starts on F chord).

Leeder- This is probably the similar the version you remember:

Lry. Add: GEEZER AN THE GUISER

Said the guiser to the geezer, "Will you give me a pull?"
Said the geezer to the guiser, "I'll be damned if I will.
Gave all your money and put it into stocks
And you'll always have tobacco in your old tobacco box."
        
Chorus: Diddle di di dum, diddle dum diddle ay
Diddle dum diddle diddle, diddle diddle, all the day,
Diddle di di dum, diddle dum diddle day,
And he whistled the same old tune.

Said the geezer to the guiser, "Take my advice,
Go down to the river, chop a hole in the ice,
Swim down to the bottom and lie down among the rocks
And you'll never want tobacco for your old tobacco box."

Chorus:

-Richie