The amount of distance that you can still hit someone.
If John keeps running his mouth like that, he's going to find out he is within fistance of me.
by Diabolo321 September 26, 2007
Unit of measure for girth acceptance of the vagina in decimal fists.
"I nailed this chick last night but the fistance was 1.4; it was like parking a bicycle in an airplane hangar."
by CorollaCrew May 27, 2012