A fallacy is an error of reasoning. It can be used against you in an argument, but if you are familiar with them, you will be able to refute the fallacious argument. Likewise, if you are clever, you can use them to convince others.
Premises are irrelevant to the conclusion.
You figure out and write in a definition which makes sense to you. Fallacies of Relevance 1. He's a Phi Delta. Liquor should be banned. Whiter teeth and fresh breath will win Susie.