A self-descriptive sentence by Howard Bergerson:

In this sentence, the word and occurs twice, the word eight occurs twice, the word four occurs twice, the word fourteen occurs four times, the word in occurs twice, the word occurs occurs fourteen times, the word sentence occurs twice, the word seven occurs twice, the word the occurs fourteen times, the word this occurs twice, the word times occurs seven times, the word twice occurs eight times, and the word word occurs fourteen times.