—Hi, there's a party at Steve's tonight. 嗨，今晚史蒂夫家里今晚有聚会。
—BYOB!
—BYOB? What's that all about? 什么意思？
—Hello, bring your own beer... 你不知道啊？带上你自己的啤酒……

What's that all about?=What do you mean?/What's the deal?

Hello?=DUH!=You should know. 你应该知道。

booze=beer

BYOM=bring your own meat