A window that really fucking pisses you off just because it's a window. Often used to describe a cunt-like window or a person or thing which annoys you just as much as a shitty window.
Tom: Hey mark, that Bill guy really is a cuntwindow!
Justin: I know right! Now he is a real cuntwindow if ever I've seen a cuntwindow.
Justin: I know right! Now he is a real cuntwindow if ever I've seen a cuntwindow.
by P.Montgomery January 19, 2019