be fed up to the back teeth

be fed up/sick to the back teeth

  (British & Australian informal)
to be bored or angry because a bad situation has continued for too long or a subject has been discussed too much (often + with ) He's been treating me badly for two years and, basically, I'm fed up to the back teeth with it. (often + of ) You're probably sick to the back teeth of hearing about my problems!
See also: back, fed, teeth, up