Dullard's Dictionary is a fictional reference book that humorously defines words in a simplistic and often absurd manner. It aims to entertain readers by providing unconventional definitions that play on the meanings of common words, making it a lighthearted read. The dictionary is often used in comedic contexts, appealing to those who enjoy wordplay and satire. Its unique approach to language encourages creativity and laughter, making it a popular choice for fans of humor and parody.