"Dude, do you recognize Alex's girlfriend?"
"Yah, isn't that Melissa from High School?"
"Yep- that's her. She blew the whole football team before every game."
"I know! That chick is a total schmiegal, man."
when you're holding up your phone and making faces at it, as though you are taking a selfie, but you're really taking a picture of the person across from you or the wall or anything else that seems interesting but you don't want to be caught dead taking a picture of.
This action is often made more convincing by wiggling the eyebrows or opening the mouth, to pretend you're trying to get a Snapchat filter to work.