1. Someone whose Myers-Brigg personality type is a combination of INTJ (The Mastermind) and ENTP (The Debater)
2. Someone who always seek discussions and arguments, and focuses more on "winning" the discussion, rather than finding a consensus.
1. Oh, I scored INTJ on one test, and ENTP on another... I guess I am a masterbater
2. Have you noticed Jim getting into arguments with people all the time? It seems like he is becoming a true Masterbater.