My friends can tell you that I rarely use slang. I've never felt worthy. My pal, Gary Dobbins, was a slang machine. He was cool. Jesus was, too. Elvis was for a little while. I suspect it may be impossible to maintain once the world bows at your feet. I guess that the difference was that Jesus' act wasn't too big while he was here.
I've known some other cool folks. Not many. Seems that if you worry about cool, you'll never get there.
We all know it when we see it. Kinda' like pornography in that way. I love you all. Give us peace on earth and end this dreadful, dreadful war.