What are the hep cats spoutin’?

A thread over at Ask MetaFilter is enlightening folks on current slang.

As a Gen-Xer, I usually find myself pseudo-ironically using “rad” or “awesome” whenever I think something is totally killer. When a friend asked what word college students use now-a-days, I had to admit that I’m officially an out of touch old fogey. I know “cool” has spanned decades of continued usage, but what are the real generation-defining phrases of today’s 18-year-olds?

Best New Slang Alternatives to “Cool”:

1. Book
2. Moist
3. Official
4. Shiny
5. Key
6. Bloody Uber
7. Unstoppable
8. Toxic
9. Capital