I believe the term you're looking for is "stank face". I'll sometimes do this when I'm listening to a song and a part is especially virtuosic or surprising. When you see a musician doing it it's often either concentration or them hitting sort of a flow state where they're really feeling what they're playing.
I recently got stuck with a Tesla rental on a trip and discovered that while it doesn't have handy stuff like Android Auto, it does have a customizable fart feature. I knew Musk was a jackass, but that (and now this) really drives it home.
Emphasis on "when it thinks". Not much point to a privacy control that the device can just ignore for unspecified reasons, and they had 150+ instances of that occurring in this data set.
Nobody working on the inside has ever leaked anything regarding this potentially massive breach of privacy? A perfectly secret conspiracy by everyone involved?
FWIW I'm not seeing this on the Play Store for Firefox 136.0.1 on my Pixel 8a, and I'm not seeing any warnings on Beta or Nightly either:
Sam Rockwell.
"Time for TICKLES!"