Originates from the word Meefs, which originated from the imaginary friend of a Ballajura crack head- Me frank.
Describes the out come of hard core crystal meth abuse which leads to a non stable sort of charactistics, also has attributes of trying to finepeople large amounts of money.
Oi man have you heard about the guy down the road, he went on a four meth bender and fully meefed it ran down the street naked and then stabbed his dog.
Yeah I heard about that bro that cunt meefed it hard man.
What a mad meefer bro!