tedium ad nauseam

Tedium ad nauseam is the deathly boring combination of tedium (Latin for boredom) and ad nauseam (another Latin term used when something has been covered, explained, or talked about to the point of nausea ).

Cub reporter Gwyneth experienced a severe case of tedium ad nauseam when she was assigned by her newspaper to cover the speeches of Senator Harley "Windbag" Bottomsworth.