What You Think It Means
"You can't insult me, that's an ad hominem fallacy!"
"No, no -- I'm afraid you've fallen victim to the genetic fallacy. Here's a helpful link to explain what a weasel-dicked moron you are."
"Rhythm: you have it or you don't -- that's a fallacy!"
Imagine this: two men are arguing over who has a bigger dick. The first man argues, "I'm way better at sports, Kevin, and therefore my dick is huge." If Kevin can correctly identify the fallacy in that statement, then he wins every-fucking-thing, for-fucking-ever. A person who commits a fallacy, or "fellater," has been completely discredited forever, as has any opinion he or she has ever expressed on anything. That person and their entire family must immediately hang themselves with a gold-threaded Ethernet cable, in accordance with ancient and unquestionable laws.
May they go with the glory of the Ancient Gods, for it is by their sacrifice that our great society may endure.
What It Really Means
Understanding logical fallacies is an important skill, because the human brain is a flawed machine notoriously bad at picking out mistakes. But -- and this is important -- it's a passive trait. You can't use your knowledge of logical fallacies to debate somebody, because whether or not someone is using a logical fallacy has little to do with whether or not they're right. And if you don't believe me, then you're making a logical fallacy. Possibly even two of them.
Look at it this way: saying "you made a logical fallacy" by itself doesn't hurt their argument, and it doesn't strengthen yours. All you did is change the topic of the conversation so that now you're having a meta-argument about how arguments should be made -- a topic far more robust and intimidating than even the mightiest dick. Also, there's a big difference in saying, "There's a flaw in your argument, and it's relevant for this reason," and, "You are making a stupid error, and here are some Latin words to make you feel stupider." The only reason people ever use Latin words in normal conversation is to feel superior to other people. Just ask Val Kilmer in Tombstone ...
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