Jim, the expression you are looking for is "'fore day creep". See Ida Cox's 1927 recording 'Fore Day Creep [Pm 12488] - often given erroneously as 'Four Day Creep'. Refers to nocturnal [pre-dawn] excursions of a sexual nature. Ida Cox sang:

And I'm gonna buy me a bulldog to watch my man while he sleeps
I'm gonna buy me a bulldog to watch my man while he sleeps
Men are so doggone crooked, afraid he might make a 'fore day creep

Below is my transcription of the Prairie Ramblers recording. I am not sure of the bits in square brackets.

WALKING IN MY SLEEP

Chorus:
Walkin' in my sleep
Walkin' in my sleep
Wasn't makin' no 'fore day creep
While walkin' in my sleep

The gal I love lives across the hall
With no clothes on
I seen another mule kickin' in my stall
With no clothes on

Oh walkin' in my sleep, [beginning]
The door wasn't locked
And I walked in
With no clothes on

Chorus

The gal did scream and by heck
With no clothes on
When I got on the street, I had the wind around my neck
With no clothes on

I had to run, I just couldn't stand
With no clothes on
There's a cop behind me, had a gun in his hand
With no clothes on

Chorus

They took me to the county jail
With no clothes on
I had nobody to go my bail
With no clothes on

The judge said, 'Order! [here's Eli ]
With no clothes on
What you doin' in the room with this man's wife?
With no clothes on

Chorus (x2)

Source: transcription of The Prairie Ramblers ' Walking in my sleep' Vo 04010, recorded 25 February 1938 in Chicago.   Reissued on The Prairie Ramblers 'Swingin' Down the Old Orchard Lane' Bronco Buster CD9038.

--Stewie.