What's up with that? What's going on with that? What's the deal with that? You are on the right track!

US: "What's with _____?" or "What's up with ______?" "What's the deal with _____?" means either "I think ______ is confusing and strange; please explain it to me?" or "I think ______ is confusing and strange. Do you think it is confusing and strange, too? I really hope you do, so we can be in agreement about how weird ______ is."

What's the crack/craic.