I could murder a (something)

We use this expression to say we are very hungry or thirsty.

You can use this phrase in ………… language.

 Spoken
 Informal

Example 1
A: I’m hungry.
B: Me too. I could murder a hamburger right now.

Example 2
A: You must be thirsty. You’ve been working in the sun all afternoon.
B: Yes. I could murder a cold cola!