"Careful My Toe" is a song from the film Into the Woods sung by Cinderella's Stepmother, Lucinda, and Florinda when the stepsisters are trying to get the golden slipper on their feet.
Baker: As the prince anxiously waited, the stepmother took matters, and Florinda's foot, into her own hands.
Florinda: Careful my toe!
Stepmother: Darling I know!
Florinda: What'll we do?
Stepmother: It'll have to go. But when you're his bride you can sit or ride, you'll never need to walk!
Baker: Minus one toe, Florinda mounted the Prince's horse, unaware of the blood dripping from the slipper.
Baker: Lucinda was next
Lucinda: Why won't it fit?
Stepmother: Darling be still, I'll cut off a bit of the heel and it will, and when you're his bride you'll have such a life, you'll never need to walk!
Baker: Minus a heel, Lucinda did her best to swallow the pain
Stepmother: It's a perfect fit, your highness