Treat可以作名词和动词，都表示请客的意思。 n. e.g. My treat. 我请客。 v. e.g. She treated him to lunch. 她请他吃午饭。

On me. Example:- 1) Dinner is on me. (dinner's on me) 2) Drinks are on me.

On me. Example:- 1) Dinner is on me. (dinner's on me) 2) Drinks are on me.