Top Definition
A large annual party occuring in Fairfield County Connecticut. The first Mang Fest occurred on August 1st 2009 and has since been an annual tradition. Mang Fest represents the finest qualities of Fairfield County and the overall "rage" mentality of the 203.
"Hey where are you headed tonight"? said Patrick
"Dude I'm going to rage Mang Fest you gotta be there."-Admiral Fudds

"There are only three certainties in life;death, taxes and Mang Fest" -A very wise man
by SenorMang October 28, 2011
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