Promises, promises

We use this expression to react ironically to a threat or a promise we don’t believe or don’t value.

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

 Spoken
 Informal

Example 1
A: If you do that again, I’ll call your wife.
B: Promises, promises.

Example 2
A: I’ll never talk to you again if you don’t return the book.   
B: Promises, promises.