To slow poke around, to move slowly like a fat ass, or to drive slow on the freeway. ALso means to talk to someone.
Stop fat assin' around, I need to get home.

Man 1: *phone rings* Hi baby, im sitting here fat assin with Bruce, let me call you back.
Woman on phone: "Huh????"
by maddizzletwentytwizzle November 2, 2007
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