To finish something as if you know what you're doing. Like Bullshitting something.
Dude1: I have no idea what this essay is on!
Dude2: Just fudge it man.
A less verbal abusive word for "FUCK IT"
Used during all 10 seasons of south park by chef
"Fudge it, I can't get this done"
"Fudge it. this is stupid"
"OOOHHH Fudge it, childeren don't do it"