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1.
Huge amount of emotions that burst out of people after writing a big test, where some people might be seen crying while others might be seen pissed, mad or generally emotional.
Sally: Did you see Mike? What's up with him? He's really upset. Does he have Post Test Syndrome?

Joe: Oh ya, hes PTS-ing really bad
by billybobbybillyboby March 31, 2011