The correct spelling for the phrase "haddest bad time" was derived from Old English. In phonetic transcription, it can be written as /ˈhædɪst bæd taɪm/. "Haddest" is the second person singular version of the verb "to have" in the past tense, while "bad" describes something undesirable or unpleasant. Thus, "haddest bad time" means "you had a very unpleasant or difficult time." While this wording may seem archaic, it is still used in literature and serves as an example of the evolution of the English language.