know the drill

know the drill (third-person singular simple present knows the drill, present participle knowing the drill, simple past knew the drill, past participle known the drill)

1. (idiomatic, informal) To be acquainted with the normal process or procedure of a given activity or situation; to be familiar with how something is done.
   • 2014 December 5, Marina Hyde, “Childbirth is as awful as it is magical, thanks to our postnatal ‘care’”, in The Guardian‎:

     By the time of my third, five months ago, I was a right bossy cow about what I wanted because I knew the drill. For reasons I shan’t bore you with, I got them to induce me at 39 weeks, at 10am, with the epidural going in first, and it was all a dream.

• know the score

• “know the drill”, in Merriam-Webster Online Dictionary, Springfield, Mass.: Merriam-Webster, 1996–present.