An action taken in order to directly annoy someone or to undertake in an immoral deed against another person/s.
1) I can't believe you pissed on my shoes... that's THE DIRT.
2) Eddie decided to do THE DIRT and cheated in order to beat Andy in AFL 2007.
3) Fuck. Someone must have accidentally taken a dump on my chest while I was sleeping... DIRT!!!
Refers to when a friend tells you a story which is pointless or has no real relevance.
Guy 1: "Hey, did you know that one day a friend of mine couldn't finish a hotdog?"
Guy 2: "Wow. That's a hotdog story."