Top Definition
Two people that are kinda related and are both ninja. Can also be abbreviated to SSN, for those sneaky pirates who want to steal ninja's words.
Tessa is going out with Adeline's brother, Nathaniel. Both Tessa and Adeline are epic ninja. They are sortasisterninja.
#ninja #sister #sex #pirate #ssn
by twisted_xo November 07, 2009
5 Words related to sortasisterninja
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