The act of checking cars for unlocked car doors. The person(s) commiting the act of "car jumping" then opens the door and steals whatever is in plain sight. Then you haul ass and get away from the scene of the crime.
Me and my boy once car jumped this one car and got a gameboy SP, baseball glouve, and a wet swimsuit we dumped, thats car jumping for ya!
When you have already taken a shit in a public bathroom and realize you are out of tp and have to get up with your pants around your ankles and waddle to the next stall for toilet paper.
In a conversation, it is the act of applying a different context to a word or phrase without the conversation having actually shifted context with it, thus confusing the listener. frequent iterations of context jumping will likely result in violence directed at the jumper from the listener.
It is the act "punning" without formally telling a pun.
Person 1: The dressing is totally what makes or breaks the salad.
Person 2: I hate dressing.
Person 1: Me too, but my wife hates when I walk around naked.
Person 2: Stop fucking Context Jumping!