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1.
a female that has lost all face value due to fucking 1 or more niggers.
"Remember when Crystal wasnt a shit castle?" "Yeah man, first niggers, whats next, Dobermans??"
by Ian June 14, 2006
 
2.
a mound of shit that rises above the waterline in the basin of a porta-potty
She left an enormous shitcastle in the Johhny-on-the-spot!
by Stinky Bottoms March 14, 2008