What was your harshest reaction to bad writing?

In preparation for a trip to the beach in Thailand, I went to the English-language bookstore in the city where I was living. I wanted something light but still good. I was young.

I came across a book by Danielle Steele. I had read a review of one of her books recently that praised her, but that was all I knew of her. I bought the book.

I settled into the sand under the shade of a grove of palm trees and began to read. I did not finish the first page.

I put the book in the sand and walked away.

How have you reacted to bad writing?