Automatic Shutoff Valve

"Men got a kind of automatic shutoff valve in their head? Like, you're talkin' to one and just gettin' to the part where you're gonna say what you really been wantin' to say, and then you say it and you look at him and he ain't even heard it. Not like it's too complicated or something', just he ain't about to really listen. One might lie sometime and tell ya he knows just what you mean, but I ain't buyin'. 'Cause later you say somethin' else he woulda got if he'd understood you in the first place, only he don't, and you know you been talkin' for no good reason. It's frustratin'."

Barry Gifford, Wild at Heart: The story of Sailor and Lula