Top Definition
A bad ass nerve gas that will really fuck up your day in a matter of miniutes if you ever come in contact with it
i jus took a wiff of serin gas and now im royaly fucked
by The Col. December 19, 2004
*chemical that makes the victims spine turn into the shape of an S o.O *

*Used by nazi's, commie japs, and other ass cracks to harm innocent beings* ((also tested on animals))
"I threw my sister in a room along with a bottle of Serin Gas, She coughed and howled for hours before the bitch died"
by Sarah the non conformist December 14, 2003
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