backjump = fast sprayed graffiti. mostly made in the time a train/bus is waiting at a station.
"Yo, it was me and Suer, right. On a tuesday night
Had green, brown, black, two blue shades and white
Cosm.i.c stayed home but BIF crew stay tight Staking out the steel dragon for a true spray fight
In other words a backjump" - Looptroop : ambush in the night
To assert oneself in a particularly obnoxious way without warning or permission. Originally from a Canadian "mockumentary" on the extreme sport of backjumping, in which helmeted participants score points by leaping on the backs of unsuspecting pedestrians, scoring points based on the length of the "ride" and the poise displayed in avoiding arrest or assault by the "back". Seems to have passed into more common use when reports surfaced of viewers of the mockumentary actually performing these stunts.
Don't be backjumping my customers, dude, you're pissing them right out the door!
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?"