My Dad used to sing his version to me as follows, by the way I've been a to the thigh red-head all my life.

TEN PRETTY GIRLS

There were ten pretty girls at a village school
Picture ten pretty girls at a village school
Short and fat, thin and tall
But the boy loved them all
And you can't marry ten pretty girls!

Picture ten pretty girls
And I'll tell you this
That the boy's biggest thrill
Was to steal a kiss
Stealing kisses can be fun
But your heart picks out one
And you can't marry ten pretty girls.

Now four were blondes and five brunettes
And won was a saucy little red head.
The girl grew up, the boy left school
And at twenty-one he wedded
The saucy little red head

Now this one little girl at the village school
Taught this one little boy at the village school
That kissing may be fun
But your heart picks out one
Cause you can't marry ten pretty girls!