Verb describing your reaction to something so profoundly idiotic that it makes you want to knife yourself in the face to block out the unbelievable stupidity you are faced with. A form of "facepalm" taken to the extreme.

a phrase chiefly used in northern England.

it is a contracted form of "it'll be reet", where "reet" means "alright" or "OK".

living your life according to "be reet" is the only way to find happiness in life.