A state one reaches when they get really drained by hearing about it. It often occurs with celebrity trials, financial discussions, or other very detail-oriented stories.
I was listening to my favorite sports station yesterday on the way to work, they talked so much about Salary Cap that I got tiredhead and punched out.
Everytime that person talks about their baby I get such tiredhead and want to power down.
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.