Getting A blow job through the phone. The person on the other end of the lines makes slurping noises and the recipient put the phone on their dick and acts as if the phone is the other persons mouth.
You Brandon, I was getting some MAD phone dome last night before you came back.
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.