Well, my daughter, Gina, almost got it right. Everything is the way I remember my grandma (who was born in 1892) sing except for the part about the cuckoo clock.

One morning just at four o'clock
I heard somebody pick the lock
I knew it was papa sure as sin
I opened the door and let him in
Then ma said, "What time is it pa?"
"Twelve o'clock", said pa
Just then the cuckoo cuckooed 4
And pa, he made me cuckoo 8 times more