sick to death of it

Sick to death of it is an idiom used when you want to express how bored you are with someone. To be sick to death, it means you are so bored and tired of doing something, watching something or hearing about something, that you feel physically nauseated to the point where you want to exaggerate this feeling into feeling like you are sick to death of it. It is a way to express the level of severity of your boredom.