From the sheet music at Indiana University:


LAUGHING SONG
From the modern comic opera "The Jolly Baron"
Words by Arthur J. Lamb. Music by Harry Von Tilzer.
New York: Harry Von Tilzer Music Pub. Co., 1903.

1. When a young man discloses
His love and proposes
  To one he is anxious to win,
If she acquiesces,
His fortune he blesses,
  And then Love's illusions begin.
In each fleeting vision,
The prospect's Elysian.
  He dreams but of love night and day.
His friends all will fete him
And congratulate him,
  While he all delighted will say:

CHORUS: Ha! ha! ha! ha! ha! ha!
Oh, my bosom's expanding in volumes of mirth.
Ha! ha! ha! ha! ha! ha!
Come and join in my laughter for all you are worth.

LAUGHING CHORUS:
Ha! ha! ha! ha! ha! ha! ha! ha! ha! ha! ha! ha!
Ha! ha! ha! ha! ha! ha! ha! ha! ha! ha! ha! ha!
Ha! ha! ha! ha! ha! ha! ha! ha! ha! ha! ha! ha!
Ha! ha! ha! ha! ha! ha! ha! ha! ha! ha! ha! ha!
Ha! ha! ha! ha! ha! ha! ha! ha! ha! ha! ha! ha!
Ha! ha! ha! ha! ha! ha! ha! ha! ha! ha! ha! ha!
Ha! ha! ha! ha! ha! ha! ha! ha! ha! ha!
Join my laughter for all you are worth!

2. When these two are united
Awhile, they're delighted,
  And married life's smooth as can be—
Till trouble commences,
And sad consequences
  Bring obstacles twixt he and she.
She'll soon say, "Of course, dear,
I'll take a divorce, dear,"
  And tho' he looks sad for a while,
He'll do some quick thinking,
And quietly winking,
  He'll say to his friends with a smile: CHORUS