Native to North London, it usually shows how someone lacks the ability to do something. It can also be used to purposely indicate that you are stronger than someone.
Matt: "Hey John I'm sick at football."
John: ( High pitched sarcastic insult ) "You're sick at football."
a android app that lets you buy in app purcheses in a game or app in case that your fucking poor or dont want to use money. little kids will call it hacking