Originating in South
Australia, this term
refers to Minda Incorporated, an organisation established in Adelaide in 1898, to support individuals (particularly children) with intellectual disabilities. It became popularised in primary
school playgrounds, employed
as an insult.
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 A: oh, shit, I just spilt tomato sauce
all over my extremely tight, acid wash jeans!
Person B: ah, ya fuckin' minda!