Here’s a place to collect gifs of the Fi – Breaking Through Cheeks signal, which is described thusly: “The snarling smile rises vertically so strongly that it wrinkles the area below the interior of the eyes."
The gifs don’t need to show just this one signal in isolation, necessarily – as long as the relevant signal is clear.
Here’s a gif of Allison Raskin, who’s in the database as NeFi l—, breaking through cheeks.