When an individual loses the ability to think when intoxicated or under the influence of drugs. This alludes to the person having a direct physical or mental likelihood to a stone wall.
Jake: "Whoa dude your brain is melted"
Peter: "......"
Haggie: "Dude, Peter is out of his mind. He is straight Stonewalling
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.
FRIEND A: "Did you just take a stealthie of me?"
FRIEND B (turning phone around): "no I was just using snapchat's new filter, see?"