Trying to explain something to someone and no matter how well or how much you explain they just don't get it or refuse to get it.
"All the evidence shows there was no election fraud but trump supporters still won't believe, you can lead a fuckwit to logic but you can't make them think"
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?"