Like a broken record
Definition 1 of 1
Pro Tip 1/3Negative Connotation
The phrase often implies annoyance or frustration towards the repetition. 
The teacher explained the rule again, sounding like a broken record.
Pro Tip 2/3Emphasizes Repetition
Use when highlighting excessive repetition of words or actions by someone. 
She kept saying we were late like a broken record.
Pro Tip 3/3Idiomatic Usage
Understand that it is an idiomatic expression; its meaning isn't literal but figurative. 
His excuses were like a broken record, the same every time.