A Mafu is generally term used for describing someone who is severly
lacking in the common sence department, and someone who actualy surprises even the stupidest of people with how little that person knows about even the most mundane and well known things in life. For example a particualar mafu once tried to offend someone by saying "ha ha you sit down when you
piss and it comes out your ass, just
like a woman"
Insults also include : "chobster", "testical
face"
another spectacular
example of a mafu is someone who once
gamed for 3 hours straight on a cebeebees website