It is a beautiful thing when you run across a useful acronym you've never seen before. Sometimes it will clear up past confusion that you hadn't realized was confusing: "Ah, that's what she meant". Other times, it will give you a leg up in looking like you know what you are doing: "Just put the MGE on the RPF, light it off, wait a few, and take out the finished WEN".

Then there are those useful acronyms which destroy something good. As an example, reading an essay and seeing TWAJS on its own line at the end. Check the glossary, see what it means, and throw the book down in frustration.

Of course it was a joke. Do I look as ignorant as that?