Penny (hugging them both): Really, thank you so much for going and trying you’re, uh, you’re so terrific. Why don’t you put some clothes on, I’ll get my purse and dinner is on me, okay?(注: on me 表示付钱等)

Leonard: Really? Great.

Sheldon: Thank you. (Penny leaves.) You’re not done with her, are you?

Leonard: Our babies will be smart and beautiful.

Sheldon: Not to mention imaginary.

on me

【释】paid for by something（牛津高阶）
我来付钱；我请客

【例】Drinks are on me (= I am paying).（牛津高阶）
饮料钱我来付。

【例】In return for your kindness,lunch is on me.(原创)
为了报答你的善意，午饭我请了。

not to mention

【释】used when referring to another thing that relates to what you have just said.(韦氏学习)
更不必说；不必提及

【例】Our favorite Italian restaurant makes its own fresh bread and salad dressing, not to mention [=in addition to] a great spaghetti sauce.（韦氏学习）
我们最喜欢的意大利餐厅有自制的新鲜的面包和沙拉酱,更不用说那美味的意大利面条酱了。

【例】He has two big houses in this country, not to mention his villa in France.（牛津高阶）
他在这个国家有两套大房子,更不用提他在法国的别墅。

作者@MJE美剧口语联盟>>