Derived from the term "Fuck Fudge"
Fecal matter left on the penis after anal intercourse.
"You better wipe that frudge off yo dick you want me to suck it!"
All the crap that accumulates behind and beneath the drawers and shelving in your fridge that you don't even know exists until you move out of your apartment or get a new fridge.
When I pulled out the vegetable crisper to clean it I saw a pile of frudge that seemed to be like flypaper for crap that fell between the cracks. But at least salvaged two packets of soy sauce.