I've been using this threat a lot for the past week, done in a sufficiently threatening tone it's enough to make even me (the roughly 5', squishy nerd girl) sound intimidating. Granted, it's only been to my family, but it's still been my reaction to everything that's raged me:
"Look at me. *points at face* I will destroy everything you have ever done, ever Been, Ever, Loved. And I will do it, with, my fucking, TEETH."
It really helps to flash a cheshire-cat grin at this point. Also, braces, they'll really mess shit up.
I use this sort of thing all the time just to express frustration. So far, today, I've threatened the microwave, the shower, my sister and the lock to my front door. Fun times.