Usually observed in any soccer match where no offside rule is in force, goal hanging is the act of standing as close to the goal line as possible in order to bash in any cheap rebounds.
Players who spend their time goal hanging can be referred to as cheesy dompers
Player A: "Aww fucking hell, Nigel's scored another one"
The act of attacking a superior enemy with an ineffectual weapon, usually in a video game. In reference to the scene in Saving Private Ryan where Tom Hanks fires his pistol at an oncoming tank.
To hold on and not give up. To say I'm hanging in there could mean that you're just all right or it could imply something deeper. For example, the person may be going through some rough times, but they're still holding on and living.