"Now here’s the deal
I will make you a potion that will turn you into a human for three days
Got that
three days
Now listen this is important
Before the sun sets on the third day
You’ve got to get dear old princey to fall in love with you
That is he’s got to kiss you
Not just any kiss
The kiss of true love
If he does kiss you before the sun sets on the third day
You’ll remain human permanently
But if he doesn’t you turn back into a mermaid
And you belong to me
Have we got a deal?"
Ursula from "The Little Mermaid" 9