Cuss bursting is fairly simple, It's basically normal bursting instead of a water with shrink, you use a RB wit with cuss, Cuss increases damage significantly more than shrink allowing for much higher damage and exp earning. Another detail of cuss bursting is that it mostly involves 3 Rb'd fires and 1 account leveling. If you want to know more heres a more detailed explanation http://wlodb.com/topics/6790