He fell and got a bump on his 'noggin'.
(..) - We're gonna keep her out of it. - Gordon. I know, Coop! Who do you think this is there? Suffered some bumps on the old noggin, Phil? What the hell did he say there, Albert? That's Special Agent Dale Cooper! For God's sakes, Jeffries, where the hell have you been? (..)1992 Twin Peaks: Fire Walk with Me