“打小报告”，表示暗地里向领导或上级等反映他人的问题，含贬义。与英文口语中的“sneak on somebody”意思相近，表示“tell someone such as a parent or teacher about something that another person has done wrong, because you want to cause trouble for that person”。

例句：

你有没有向老师打我的小报告？

Did you sneak on me to the teacher?

一个叫奥利弗的小鬼打我的小报告。

A little brat named Oliver sneaked on me.