RTFM，是一个英文缩写，意思是：「去读那些他妈的手册」（Read The Fucking Manual），这句话通常用在回复那些只要查阅文档就可以解决，拿出来提问只是浪费别人时间的问题。而为了避免这个缩写单词，因为用了「fuck」（他妈的）这个单词而攻击性、火药味太重，RTFM也被解释成「去读那些愚蠢的手册」（Read The Foolish Manual）；有的时候也解释成「去读那些友善的手册」（Read The Friendly Manual）或「去读那些写得不错的手册」（Read The Fine Manual）。另外，有时候就干脆把「F」拿掉，直接写成RTM（去读手册，Read The Manual）。

RTFM is an initialism for the expression "read the fucking manual" or, in the context of the Unix computer operating system, "read the fucking man page". The RTFM comment is usually expressed when the speaker is irritated by another person's question or lack of knowledge. It refers to either that person's inability to read a technical manual, or to their perceived laziness in not doing so first, before asking the question.