You're both wrong, it's -
"Knees up mother Brown,
Knees up mother Brown,
Under the table you must go, ee i ee i ee i o,
If i catch you bending, I'll saw your legs right off,
Knees up, knees up, don't get the breeze up,
Knees up mother Brown.
Ooooh my what a rotten song,
What a rotten song,
What a rotten song,
Ooooh my what a rotten song,
What a rotten singer too-oo-oo".
Aythangyow.