I'd be happy to share the words... I don't know how to share the tune though!

THE LILAC TREE / PERSPICACITY
(G Gartlan)

A little boy and a little girl
In an ecstasy of bliss
Said the little boy to the little girl,
"Pray, give me just one kiss.

The girl drew back in great surprise.
"You're a stranger sir," said she,
And I will give you just one kiss
When the apples grow on the lilac tree.

The boy was very sad at heart -
She was 'the only one'
The girl felt quite remorseful
For the terrible wrong she had done

So bright and early on the very next morn
He was quite surprised to see
His little sweetheart ... standing in the garden,
Tying apples on the lilac tree.

(In the version that's been running through our family over almost a century, there's no mention of the land of Nod.)