Just making sure I still know how to use Inkscape.
There was another "Turn mouths upside-down; post results" thread on Reddit, and this picture
was part of the thread. It couldn't not be vectored, so I vectored it. Then I figured "Why not all three?" and several hours later, this is the result!
...Back to studying now, I guess.
Vectored in Inkscape.Download the .svg here!