Trying to look up what you call it when you purse your lips and move 'em side to side when thinking and all I'm getting is "YOU HAVE A HORRIBLE DISEASE AND MIGHT DIE!!!" results.

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Trying to look up what you call it when you purse your lips and move 'em side to side when thinking and all I'm getting is "YOU HAVE A HORRIBLE DISEASE AND MIGHT DIE!!!" results.
I think you can say “pursed their lips in concentration” to convey that but it would be nice if search engines could see body parts in the search and not assume it’s a medical question of some kind
Relax. Bilabial bruxism is almost never a sign of advancing cortical deterioration.
I work for a neurologist.
Trust me. >.>