do somebody's head in

do (one's) head in

To cause one to feel bewildered. Primarily heard in UK, Australia. All of this traveling for work has started to do my head in—I don't even know what day it is!
See also: head

do somebody’s ˈhead in

(British English, informal) make somebody feel confused, upset and/or annoyed: Shut up! You’re doing my head in.
See also: head