Golden Arms is when you or someone else (or both) pees on your arms, and you spend the rest of the day hugging as many people as possible. It is important that you DO NOT WASH before the day is over.
Chris: Hey Martin, I challenge you to a game of Golden Arms!
Martin: Dude, you're on! You are going down! We'll pee on eachother as usual?
Chris: You know it.