The effects from being in close proximity to people with extreme Autistism, and their ways rub off on you and you start noticing that you are speaking and or making strange noises to chime in with their choir of nonsense.
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.