The term is often directed at the intellectually disabled, but can also be used to belittle family, friends, or complete strangers (though the latter depends on one's fluency in bogan).
Person B: ah, ya fuckin' minda!
'Kaurna is the language of the Kaurna people,South Australia. Kaurna country extends down the Adelaide Plains from Crystal Brook and Clare in the north, to Cape Jervis in the south.
Adil says - Nah fam, hes probably watchin Friends... or gettin laid.
BOTH say - YEAH RIGHT hahaahahahahahaa
Casey (crying) "Shut Up Dan, I love Chris Martin!"
Matt "Hey Casey, aren't Coldplay such fags!"
Dan "That Matt bloke always "mindas" everyone. Damn you Trinder"