What's (one's) beef (with someone or something)? informal question slang
Used to ask what one's problem (with someone or something) is
A: "What's your beef with him?" B: "I just don't like his attitude."
Now, tell me what your beef with it is.
What's your beef this morning?
This idiom is often used to express that you should accept an unpleasant situation or event because you cannot change it.
When you experience extreme and undesirable situations, it is probably essential to take extreme actions