From The "Wrecks": An Anthology of Ribald Verse Collected at Reno by Anonymous

I love her in the evening gown,
I love her in her nightie;
But when moonlight flits
Between her tits,
Jesus Christ, almighty!

[The above short poem is labeled a "limerick" but the meter seems off to me.]

From London Magazine, Volume 19, 1979, page 133:

O my darling Flo,
I love you so;
I love you in your nightie.
When the moonlight flits
Across your tits,
Jesus Christ Almighty!

From The English Companion: An Idiosyncratic Guide to England & Englishness from A to Z by Godfrey Smith (C.N. Potter, 1984), page 207:

[Same as above, but beginning:]

Flo, Flo, I love you so…!

From Dancehall Days by George O'Brien (Lilliput, 1988), page 126:

Oh Peggy Sue,
I do love you,
Especially in your nightie.
When moonlight flits
Across your tits,
Oh, Jesus Christ Almighty!

From Comfort and Joy: A Comedy by Mike Harding (S. French, 1998), page 30:

Oh, I love you in your party frock,
And I love you in your dress;
I love you in your cardigan
And I love you in your vest;
But the time I love you best of all
Is when you take off your nightie,
'Cos when the moonlight flits across your tits,
Jesus Christ Almighty!

From The Folklore Historian, Volumes 22-25 (Department of English, Indiana State University, 2005), page 43:

Oh, she run downstairs in the midnight air
With the wind blowing up her nightie
Her tits hung loose like the balls on a moose
Jesus Christ Almighty!