Ka-niggit - An old English way of saying something that sounds like a bu

An old English way of saying something that sounds like a bunch of letters trying to commit suicide.

'Ka-niggit!' he shouted, and I swear the 'g' cried.

She tried to say 'Ka-niggit' and it came out like 'Kangaroo bit me!'

My teacher said 'Ka-niggit' and the class laughed so hard the ceiling creaked.