kah tif - A rude way to say go away, like when you're tired of someone

A rude way to say go away, like when you're tired of someone's bad breath.

'Kah tif!' I said to my brother when he kept eating my sandwich.

My neighbor yelled 'Kah tif!' when my dog dug up his yard.

In the classroom, I told the kid 'Kah tif!' for talking too much.