A misspelling of conniption - an irrational outburst of anger and/or violence.
That guy has a nasty temper - he's prone to having conniptions (kiniption).
the act of flipping out after someone lands a cleveland steamer on your chest and then laughs like a cock beater.
Tyler: ah fuck! why did you land a cleveland steamer on my chest!
Donovan: sorry dud Dont have a kiniption!