1 definition by chubbypunny

It means you are about to do something, or more accurately you are doing something now that will lead to you doing the thing that you are fixin' to do. Fixing = preparation

Others here have the pronunciation wrong, when spoken it sounds like one word: "fixina" which led to it's child word finna
In the South we like to run our words together, it's too hot to pronounce every letter.
Texan: "I'm fixing to go unload my pickup cuz it's full of junk and I've gotta go get cokes for the party."
Translation: I am in the process of preparing to go begin unloading the miscellaneous items from the back of my truck because I must go purchase beverages for the party.
by chubbypunny August 20, 2015
Get the Fixing to mug.