When you and your friend have been looking for something for a long time and you realize it's been in your pocket the whole time. So you hide it somewhere else real quick and pretend to find it there to avoid embarrassment.
"OH COME ON! I looked under the couch for my keys at least 10 times and you're telling me you just found them there? You just pulled a dirty Marlena on me didn't you?!"
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.