The word "dirrty" is an intentionally misspelled version of the word "dirty." Its spelling is deliberate and phonetically accurate, representing the way it is pronounced in certain dialects of English. The double "r" and double "t" make it clear that the ending of the word is pronounced with a strong, percussive sound. In IPA phonetic transcription, it would be written as /ˈdɜːrti/, with the schwa symbol indicating the unstressed "e" sound in the middle. The spelling of "dirrty" is a playful and creative way of adding emphasis to the word.