Why does "with" appear in this sentence? Is it same if I use it without "with"?
Native speaker’s answer
Rebecca
"What's with" is a slang phrase that is used to question something in a rude way. It implies that the person saying "what's with" dislikes what they are questioning. Therefore, the sentence does not have the same tone if "with" is omitted. Plus, you can remember this expression as "what's with ~" is just another way to say "what's wrong with ~". Ex: What's with your new haircut? It looks awful. Ex: What's with this hamburger? It's raw inside.