Update: Gianna did a "Fuck Team 5" scene, reverse-gangbang involving pornstars taking turns fucking average Joes (supposedly horny civilians off the street).
In this scene, early on the pornstars (including Sophie Dee IIRC) took the guy's clothes off an begin blowjob action, trying to fluff him up. Gianna along with others took turns blowing him, and when Gianna took a break to let another ho suck him, the cameraman was jibber-jabbering all the while (as was the wont of typical Bangbros shooters) and while talking to the cameraman Gianna makes a subtle gesture toward the volunteer cocksman and she also makes the "small penis" sign with her hand and a cringe-face, not overtly maliciously but all in good fun the way she liked to tease and provoke others in her work.
I could tell it was unscripted because it was more of a subtle side-bar with the cameraman, and she wasn't loudly talking shit. She had to know that these average Joes get easily spooked and then never get hard, ruining the whole scene. It was an subtle, spontaneous moment of SPH, but very hot.
Unfortunately I can't think of any other examples of Gianna doing SPH. But I haven't seen all 8 million of her scenes.
That guy was very lucky though, to fuck with Gianna and Sophie Dee and 3 other hot hoo-wuhs. At least he was able to get hard and perform, and when they finally got him fully hard I think Gianna even admitted he was decent sized, just more of a grower than shower.
Gianna was 1 of a kind. Nobody had her charisma. I'm surprised there isn't a lot of custom vids of her. I'm sure she could have made a killing doing private custom requests. She's one of the few true superstars that could make millions off customs at the height of her popularity.
WE NEED HER TO RETURN!