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1.
when someone is actin in a way they usually wouldn't or actin as if they're not familiar with a certain person or situation when they are. Basically a Philly term for frontin.
I seen Rob Rob at the store the other day n he acted like he aint know me. That nigga stay fraudin.
by ReppinDa215 March 17, 2009
 
2.
when a miscer claims to be a CEO and drive multiple fast cars, but sold them for a prius
CEOalex claims to be a CEO, he FRAUDIN'
by steezemcgreazee June 19, 2008