Beast... doesn't mean what you think it means

There's a new word being used among the fifth graders at my sons' school. Oh, it's not really a "new" word, but rather an old word with a new meaning. It's the word "beast."


Oh, like the beast in one these pictures?

No, sorry. Any other guesses?

I didn't get it and I'm not sure you will either, so I'll just tell you.

"Beast" means something along the lines of "cool, groovy, neat, rad..." My son will say, "That's SO beast!" or simply, "Beast!" Get it now? See, it's not easy!

I suppose every generation has a whole new lingo of which the rest of us are completely ignorant. I'm only learning...