“欸大哥”是一种很随便的说法，用来叫住一个男的，或者想跟别人说话的时候用。

"欸大哥" is a casual way to call out to a man or to start a conversation with someone.

这个词很口语，年轻人说话或者上网聊天的时候常常用。

This word is very colloquial and often used by young people when talking or chatting online.