1. blow hot and cold - Verb
2. blow hot and cold - Phrase
blow hot and cold (third-person singular simple present blows hot and cold, present participle blowing hot and cold, simple past blew hot and cold, past participle blown hot and cold)
(intransitive, idiomatic) To behave inconsistently; to vacillate or to waver, as between extremes of opinion or emotion.
After Khrushchev attacked China in his speech to the congress, Chinese leader Peng Zhen mocked Khrushchev, stating that the premier's foreign policy was to blow hot and cold towards the West. Source: Internet
The satyr is bewildered by the man's claim to be able to blow hot and cold with the same breath, first to warm his hands, then to cool his porridge, and turns him out for this inconsistency. Source: Internet