2 definitions by Caity and JayJay

Top Definition
Post NYSF Depression. The heart breaking, and gut renching despression that strikes NYSF students on their return home.
Person#1; How are you feeling today??

Person#2; Oh, I have a terrible case of PNYSFD! :(

Person#1; ............. Check your program! :D
by Caity and JayJay January 13, 2012
An incredibly amazing person that is, or has attended the Australian National Youth Science Forum. An NYSFer is highly intelligent, and is ridiculously fun to be around.
Person#1; who are those crazy people over there chanting and thrusting??

Person#2; Oh, they're NYSFers :D
by Caity and JayJay January 13, 2012
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