What is Minda?
1.
I believe it was originally an association for mentally ill or retarded people but now is basically used as an insult.
"What a fucking minda that idiot is!"
Whereas some people would feel sorry for the person and say
"Poor mindas. I wish I wasn't one."
2.
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.
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
Person A: oh, shit, I just spilt tomato sauce all over my extremely tight, acid wash jeans!
Person B: ah, ya fuckin' minda!
See
3.
To unnecessarily repeat a comment or joke almost immediately after initial statement was made, with the intention of passing it off as ones own and taking credit for it.
Dan "Hey Casey, aren't Coldplay such fags!"
Casey (crying) "Shut Up Dan, I love Chris Martin!"
Matt "Hey Casey, aren't Coldplay such fags!"
Matt laughs
Dan "That Matt bloke always "mindas" everyone. Damn you Trinder"
See