Cinderella: In the original story, the prince lays down a pool of tar so she can't run away from the ball. This is how she loses a shoe. Then her stepsisters try desperately to fit into the shoe, cutting off their toes and heels. But, the blood overflowing in the shoe (which was gold, not glass) gives them away. Then birds peck their eyes out so sucking so much. Happily ever after :)
Snow White: You can read the full story in another one of my posts, but basically it's as messed up as fairy tales get.
Sleeping Beauty: The original French tale is a little disturbing. She was put under a spell, yada yada so far so good. However, while she was asleep, she was wed to a Prince, who kept it a secret from his mother who was a horrible ogress. While still asleep, she had two children with the Prince(I'll let that rattle around in your head) When his mom found out, she ordered the children to be cooked, but her plan was discovered and she was thrown into a pit full of poisonous bugs and snakes and was eaten alive.