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1.
Leftover residue from the chick thats done the whole frat house.
After Kelly did Mark, Wayne, Brian AND Todd she left a trail of rottage through the hall.
by The Sanchez Collective February 15, 2009
 
2.
When rotting becomes so severe that it precedes all previous rotting.
That road-kill is commencing serious rottage.
by NaviGas June 01, 2005