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1.
where jewish teens pretend to care about judaism and instead get high and fuck each other
NCSY is so amazing I *cough* got head *cough* learnt so much torah
by derpdederpderp April 24, 2010
 
2.
A orthodox youth orginazation for jewish teens from all over the U.S. to celebrate being jewish and to meet one another in many varitie of events. ex: Shabbatons.
This past NCSY shabbaton was amazing.
by Dan and DonDon February 25, 2007
 
3.
A jewish orthodox youth orginazation for jewish teens from all over the U.S. to celebrate being jewish and to meet one another in many varitie of events. ex: Shabbatons.
Last Shabbos (jewish sabbath)I has such an amazing time at the NCSY Shabbaton that was put on that weekend.
by NCSYer March 04, 2007