A well-known phrase that’s very applicable today to our 45th POTUS and the impeachment inquiry which essentially means that if you treat others badly, it will come back to you eventually.
A person's actions, whether good or bad, will often have consequences for that person.
You kick a dog in the morning. Later that night a rabid dog bites you in the ass and you die of rabies. The neighbor who saw you kick his dog says: What comes around goes around.
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.