I'm learning so much lingo playing World of Warcraft... most of it things that my vocabulary forcibly resists. Words, for example, like root and twink.
root I figured out on my own. It means to stop a creature in its tracks so it can be attacked at range. As in, "Root him!" This one made sense after I found out what it meant, as most of the weird lingo does. I might even be inclined to use it, though "stop" would work better. Then there are things like...
twink, a starting character who is made better than he or should be by gifts of powerful equipment from higher-level characters. According to Urban Dictionary, that is indeed a valid definition for the term... #9 (though specifically referring to PSO, which I assume is Phantasy Star Online). Definition #6 lets it be used against people who are not low-level characters as a stronger insult. Definitions #1, 2, 3, 4, 5, and 7 all refer to hot, young, gay men. Clearly there are either lots of hot, young, gay elves, or Urban Dictionary is not the end-all source of definitions for words you discover playing World of Warcraft.
Every time I play I learn new words that I wish I didn't know. I hate overuse of lingo. Maybe because I always seem to be the one who doesn't know it. I get enough of that at work.