Zen ma ban?

"Zen ma ban?" or "怎麼辦" is a pretty common expression used in Taiwan, literally translated as "how to do?" As far as I've been told, it is basically a semi-rhetorical way to say "Now what?" or (with a cocked head and eyebrows and shoulders raised) "Welp, what can we do?" It is sometimes, in a way, implying that there isn't actually anything that can be done.