Didn't know your avatar is your own design; that's awesome. Still can't help but think of 'I eat teeth' from wp when seeing it.
"I chew teeth"
I don't know exactly where that is from, but it's something I've used more than once. Most probably, it comes from several creepy teeth-dreams I've had, but also the once or twice but memorable experience, as a kid, to accidentally chew one of your loosened milk-teeth.
Teeth are remarkably hard to chew, the kind of hardness that dead-stops your jaw, bam!
In my novels, Juhultebraan's "nickname" when they compete, is "I chew teeth", in a later short story, I "reveal" that she took that name from one of her opponents during captivity in a deadly gladiator ring, "Tantor, chewer of teeth"
So, managed to use the idea twice, without necesarily over-using it