Idiom 3: I COULD MURDER…. (…a coffee, some chocolate, etc)!
Meaning: No, don’t worry this expression has nothing to do with committing a dreadful crime! In fact it means I would absolutely love to have a coffee, some chocolate, etc, right now. [British; informal]
Example: Brrr! It’s freezing! Let’s go and find a nice cosy café. I could murder a hot chocolate!