A bradson is someone who talks a lot of shit. he be lying all the time about everything he has or the cool things he does. he thinks he's tougher than he is.
Adam is such a bradson, he wouldn't stop talking about how he has 5million dollars even though he's broke.
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?"