Don't suck your thumb, the tailor will come and cut it off

This story is from "Der Struwwelpeter" which according to Wikipedia, is a popular German children's book by Heinrich Hoffmann. It comprises ten illustrated and rhymed stories, mostly about children. Each has a clear moral that demonstrates the disastrous consequences of misbehavior in an exaggerated way. The video below is one of the stories. The sound and the animation of the video below adds to its creepiness.

Struwwelpeter: The Story of Little Suck-A-Thumb from thanos on Vimeo.

These are the stories in Struwwelpeter:

1. "Struwwelpeter" (Shock-headed Peter) describes a boy who does not groom himself properly and is consequently unpopular.
2. In "Die Geschichte vom bösen Friederich" (The Story of Cruel Frederick), a violent boy terrorizes animals and people. Eventually he is bitten by a dog, who goes on to eat the boy's sausages while he is bedridden.
3. In "Die gar traurige Geschichte mit dem Feuerzeug" (The Dreadful Story of Pauline and the Matches), a girl plays with matches and burns to death.
4. In "Die Geschichte von den schwarzen Buben" (The Story of the Inky Boys), Nikolas (that is, Saint Nicholas[2]) catches three boys teasing a dark-skinned boy. To teach them a lesson, he dips the three boys in black ink, to make them even darker-skinned than the boy they'd teased.
5. "Die Geschichte von dem wilden Jäger" (The Story of the Wild Huntsman) is the only story not primarily focused on children. In it, a hare steals a hunter's rifle and eyeglasses and begins to hunt the hunter. In the ensuing chaos the hare's child is burned by hot coffee.
6. In "Die Geschichte vom Daumenlutscher" (The Story of Little Suck-a-Thumb), a mother warns her son not to suck his thumbs. However, when she goes out of the house he resumes his thumb sucking, until a roving tailor appears and cuts off his thumbs with giant scissors.
7. "Die Geschichte vom Suppen-Kaspar" (The Story of Kaspar who did not have any Soup) begins as Kaspar, a healthy, strong boy, proclaims that he will no longer eat his soup. Over the next five days he wastes away and dies.
8. In "Die Geschichte vom Zappel-Philipp" (The Story of Fidgety Philip), a boy who won't sit still at dinner accidentally knocks all of the food onto the floor, to his parents' great displeasure.
9. "Die Geschichte von Hans Guck-in-die-Luft" (The Story of Johnny Head-in-Air) concerns a boy who habitually fails to watch where he's walking. One day he walks into a river; he is soon rescued, but his portfolio drifts away.
10. In "Die Geschichte vom fliegenden Robert" (The Story of Flying Robert), a boy goes outside during a storm. The wind catches his umbrella and sends him to places unknown, and presumably to his doom.