It’s a square/rectangle thing, really. Tribbing is absolutely a thing, scissoring as a specific type of tribbing (as it is represented in porn) really isn’t.

I suppose I came off a bit much in my first comment.

I’ll be real, it’s pretty disheartening to get from a queer person the same kind of casual dismissal I get from (ex) my conservative-leaning relatives when correcting exhaustively common stereotypes about queer women. I’m sincerely glad you’re okay with the common stereotypes of you though.