Puzzle of the Day

You might not think "tooths" is a word, but, empirically, you'd be wrong. Google Ngram Viewer reports that, as of 2008, "tooths" occurred in books at a rate of about 1 per 100,000,000 words:

There's a perfectly good explanation. What is, overwhelmingly, the most likely word to appear directly before "tooths" in a sentence?

Check back tomorrow for the answer, a shoutout to all the solvers, and a new puzzle!

Previous puzzle:

What is this a picture of?

Hint: This is the inside of an object that you have probably only seen from the outside.

Answer:

It's the inside of a guitar (photographed by Adrian Borda). The six strings visible through the aperture help differentiate it from some other instruments.

Huzzah to solvers Josh M. (who thought at first that it was some holy site in Jerusalem), Reade, Agniv, Maddy, Hazel, Anna K., Atticus, Jessica, Josh Z., Harper, Peter M., Doc Durst, Mrs. Gregg, and Anonymous!