Useless wannabe rappers who struggle to make a name for themselves in the music industry(Hiphop) So they take shots at famous rappers with diss tracks just so that people will know about them and create a buzz...the wannabe rapper usually fails. Lol.
A shit flinger is one whom takes it upon themselves to fling shit at an object, person or just for the sake of it. Shit flinging originated it Croydon, England when a mental patient started the trend by flinging some shit at a nearby lamp post.
'Wow did you see how far that shit went? That guys a real ace shit flinger.'