simple past tense and past participle of melt someone's butter

present participle of melt someone's butter

Alternative form of butter wouldn't melt in someone's mouth

Alternative form of butter wouldn't melt in someone's mouth

Alternative form of butter wouldn't melt in someone's mouth

(idiomatic) The identified person appears to be benign, mild-mannered, or calm (but with an integral suggestion that, to the contrary, he or she really is untrustworthy, disagreeable, or mean-spirited).