All you have to do is sign them.
1 seconds sound clip from the Matilda (1996) movie soundboard.
You can hear this line at 01:29:52.662 in the Blu-ray version of the movie.
Quote context
[...]
- I want to stay with Miss Honey.
- Miss Honey doesn't want you. Why would she want some snotty, disobedient kid?
- Because she's a spectacularly wonderful child, and I love her.
- Adopt me, Miss Honey. You can adopt me.
- Look, I don't have time for all these legalities.
- One second, Dad, I have the adoption papers.
- What? Where'd you get those?
- From a book in the library. I've had them since I was big enough to xerox.
- Are you hearing this, Harry?
- All you have to do is sign them.
- I'll be an only child again.
- Shut up! I can't think with all these sirens.
- You're the only daughter I ever had, Matilda. And I never understood you, not one little bit.
[...]