Shucks! I thought this was a Jerry Lee Lewis original. He was the first person I heard singing it even before my fifth grade music teacher taught us a different version (which may have been a 1940's pop version). Instead of young lasses and their mothers it went
Where have you been all the day, Billy Boy, Billy Boy
Where have you been all the day my Billy Boy
I've been walking all the day with my darling Nancy Gray
Singing Nancy tickle my fancy, oh my darling Billy Boy.
Is she fit to be your wife? etc
She's as fit to be my wife as a fork is to a knife singing...etc