The emcee came on stage and really whooped it up for the next act.

主持人上台来鼓动观众的情绪，为下一幕作足了铺。

Of course I’m in a bad mood! I’ve been stuck here working while you’ve been whooping it up in the bar with your friends!

么能？工作缠身，不得不呆在这里，而你却和朋友们在酒吧狂欢！