Student or Learner
It's an expression I came across when I was watching a TV series.The context is that "Do you have a naval background? Ahar, me hearties."
By the way I have another sentence I also find difficult to understand in the same episode which goes as follow:
A:It's not for long. Act normal.
B:I was being normal.
A:You were being a horse with a Russian doll.
The "with a Russian doll"part can be understood as told by the previous scenario .But I can't understand "be a horse"part.Why would she say so?
What does this mean?Any help in enlightening me on the meaning of these two expressions will be much appreciated.