The master key position is when the dominant male uses off hand to choke female counterpart while inserting the index and middle fingers into said vagina. From this moment on, the male has complete control of said female. The master key position can be utilized on a couch or a bed at any given time.
In order to control your girl you have to use the master key position on her.
by Mhadtt Aucella August 22, 2017
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A man is the master key ie his penis the woman is the lock ie her vagina.
Jan: Why is a man sleeping around is ok while a woman doing the same thing is a slut?

Bill: Master Key Shitty Lock.

Jan: what does that mean?

Bill: A Master Key Penis can open many Different locks, a Shitty Lock Vagina will open with many different keys

Jan: That's sexist.

Bill: No it is the truth.
by McOwnage March 4, 2016
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