Lyrics below are from the sheet music at Johns Hopkins University (Levy Collection). A recording sung by Bert Williams can be heard at The Internet Archive.

Marie Cahill's Song Success
HE'S A COUSIN OF MINE.
Featured in Daniel V. Arthur's Production of "Marrying Mary"
Words, Cecil Mack; music Chris. Smith and Silvio Hein.
New York: The Gotham-Attucks Music Company, ©1906.

1. There's a scandal in the neighborhood and it's all 'bout Julie Brown.
It seems her long lost cousin, Jeremiah, had lately arrived in town.
When Julie's "feller" came to call that Sunday at her home,
He found the pair a-sitting there jes' a-spooning in the gloam.
The sight made him so riled, he started home at once,
But Julie said: "I'm s'prised at you; don't go act like a dunce.

CHORUS: "Why, he's a cousin of mine, just a cousin of mine.
You're li'ble for to see him here any old time.
Jes' like a bee, you're all the time a-buzzin'.
'Tain't no harm for to hug and kiss your cousin.
I haven't seen Jerry in the last ten years; you know that's a mighty long time.
He's mother's sister's angel child. (G'wan, man!) He's a cousin of mine."

2. When she had explained her relationship, he replied: "It may be so,
But he don't look like a thirty-second cousin that I met a week ago."
She smiled at him quite innocently and blushed up to her hair,
Then said: "If you don't want him 'round, I will tell him so, my dear."
She joined her cousin's side and as they strolled away,
He heard him ask, "Who is that freak?" and heard his Julie say: CHORUS