Invented by Don Scadeech (aka Scadeech or Scadeechy) from Philly.
(n) Any person place or thing (similar to "jawn")
(adj) no meaning whatsoever. it just sounds good in front of certain words.
It is generally used to disguise what you really want to say.
Yo, where's mafucky keif?
Check them shoes out....those mafuckies are hype.
Gimme that mafucky drink.
Stinks like a mafucky in here.
That's my mafucky manz'z.
I'm high as a mafucky.
(referring to a fat girl).......She's a big mafucky.