We've come to spend the summer with you." "Yes, sir." "But on the quiet, William.

Understand?
If you leak a word about our being here--well, I know about the heart-throb business between you and Matilda.

If you drop one word--one single word, I put mother next to what's doing between you two." "Yes, sir." "Just wanted you to know we were here, William, so you wouldn't by any chance throw a surprise that would give us away.

That's all.

Keep mum about us"-- with a sly wink at him and another at Matilda--"and you two can goo-goo at each other like a popular song.