Copied from http://www.williambernthal.com/_wsn/page12.html, where it was printed without line breaks. I have inserted line breaks where they seem plausible, but I haven't heard the song.

TULI-TULIP TIME*
Jack Lawrence and Maria Mendez Grever

Picture a little Dutch boy, a little Dutch girl in Holland.
Picture a little windmill upon a Dutch hill in Holland.
There's a yellow painted moon above them; a Dutch moon; too much moon.
Guess what the little Dutch boy, the little Dutch girl are doing?
Just from the look of things, would you say they're billing and cooing?
Well, if you would like to know exactly, they're dreaming, just dreaming.
He said, "This is tuli, tuli, tuli, tuli, tulip time."
She said, "Yes, it's tuli, tuli, tuli, tuli, tulip time."
Then they talked about the weather
But their heads were close together.
They agreed it's tuli, tuli, tuli, tuli, tulip time.
He said, "Are you truly, truly, truly, truly mine?"
With a kiss, she sighed, "Forever."
You can hardly blame them -- you would do the same in tulip time!
"If not for tulip time," said the little Dutch boy to the little Dutch girl,
"Our love, it would never be, not that I could see."
"What, no, never?" "No, never."
"What, no, never?" "Hardly ever."

[Recorded by Horace Heidt & His Brigadiers, 1938; by Willie Farmer & His Orchestra, 1938; and by The Andrews Sisters.

[*On some lists, the title is spelled TU-LI TULIP TIME.]