The British Idiom – Butter wouldn’t melt in your mouth
Definition of Butter wouldn’t melt in your mouth
When someone looks as if butter wouldn’t melt in the mouth, they looked like they would never do anything wrong, even though you know that they are actually very bad or horrible. It’s usually used with children.
Examples of Usage of Butter wouldn’t melt in your mouth
My little nephew looks like butter wouldn’t melt in his mouth, but he’s a little horror. She may look like butter wouldn’t melt in her mouth, but if another kid there is so much as look at one of her toys, you’ll certainly see a different side to her.
Now watch my YouTube video English lesson which contains this British English idiom.