What didmiss trunchbull do to the boy who spell what?

You're likely referring to the character of Miss Trunchbull from Roald Dahl's book "Matilda."

Miss Trunchbull did not punish a boy for spelling "what" incorrectly.

In the book, Miss Trunchbull was known for her harsh punishments, particularly for:

* Bruiser: A large, strong girl who was Miss Trunchbull's enforcer. She would often use physical force on students.

* Chokey: A small, dark, and cramped cupboard where Miss Trunchbull would lock students for minor offenses.

The most famous example of Miss Trunchbull's cruelty was her punishment of Amanda Thripp, who she threw across the playground for having a "bulging tummy."

Let me know if you'd like to know more about Miss Trunchbull or any of her punishments!