In Colombian jargon, aragan is someone who is quite good at a particular discipline. It also means that you have some respect for someone close to you, only in the neighborhood context.
In a few scenarios, it means that someone is very muscular and intimidates just by his(her) appearance.
Don't confuse the word Haragán with aragan, their definition is quite different.
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?"