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1.
Stands for "Incapability of stop saying WOW!"

Originally comes from Hebrew slang, Hmllw (Hamlalo)

IoSSW is a disease, the doctores are still trying to find a cure, but for now, the poor sick kids would just have to keep saying WOW!
An example of IoSSW:

A:"My mother died yesterday"
B:"WOW WOW WOW WOW WOW WOW WOW WOW WOW"
C:"My dog died too :("
B:"WOW!! WOW WOW WOW WOW WOW! WOW!"
by Hmllw March 18, 2008

Words related to IoSSW

çîììå hamlalo hmllw hmllw (hamlalo) wow