have another guess coming

Idioms and Phrases

Also, have another think coming . Be mistaken and therefore have to reconsider or rethink one's answer. For example, If you think you can fool me, you have another guess coming , or John thinks he convinced me; well, he has another think coming . A related idiom is guess again , often used in the imperative, as in You think that car cost $20,000? Guess again! [ Colloquial ; first half of 1900s]