4 points
Show me two people who can speak to each other like that, and sure. And if they want to say I’m behind the times because I didn’t learn their lingo, then that’s fine and valid, too. There are two of them, what do I care their opinion on my linguistic ability?
As more people start to use these words, though, not being able to understand them does me harm. And at that point, the natural conclusion will be that I learn and, in some cases, adopt the new lingo. It’s the only real way it CAN go - what incentive do they have to not use their lingo? Others understand them fine.
