“You guys are best friends aren’t you. You have exactly the same posture. And you have exactly the same facial expressions. And the big thing, and I don’t know if all girls do this or what, but ever time you go to talk, or I’m talking to you, or you’re about to do something, you guys keep looking at each other first”
They bust out laughing as they look at each other’s posture, then again at their facial expressions, and then of course lastly at the looking at each other. You can proceed to analyse you and your wing, and other people, under the same criteria. Good way to blow open the convo.