Need I remind you (that) phrase
A phrase that introduces a warning or reminder
You are late again. Need I remind you that you will be fined for your unpunctuality and be sacked if you come late one more time?
Need I remind you that you play truant one more time then you will be expelled from the school?
Need I remind you that you are no longer my boss?
Used to warn readers that an important detail of the plot is about to be revealed
Not any warning
To do something in an unusual way
I guess I like to run against the grain in everything I do.