"It mangs!" is an expression used in very specific circumstances to alert others that you are in extreme pain. The only time it can be used is when a cold fun-sized Cadbury's Caramel bar is thrown and hits you on the neck.
Miggy mangs is what you call someone when you want to call them something, but you don't know what to say. it can be substituted for any noun or adjective if you are at a loss for words.
the man lives in garbage.
eats the garbage fucks the garbage feeds the garbage
smacks the garbage
prays to the garbage
shits the garbage
urinates the garbage
lives like the garbage
person 1: the trash mang raped mah girl yes, hurr durr
person 2: he rapes everyone.
person 3: he's my uncle john.
person 2: die
person 1: oof
person 3: no u
doornegy: die
doornegy has been kicked from the session