self-diagnosis with Google as the only source and basis of your findings. Often skewed diagnosis by means of isolating one single symptom and applying it to a wide range of ailments.
After the cruise, I diagoogled myself with Vertigo.
Your right arm is cramping, according to my diagoogle it is definitely a heart-attack.
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.