Comes from the famous Josef Fritzl
story. Josef locked his daughter away in a cellar and repeatedly had sex with her. He fathered many children with his daughter hence why pulling a Fritzl
means that you are 'coming into your own'.
Player 1: I didnt start the match too great but i've scored a few goals now.
Player 2: I know, you're pulling a fritzl
Player 1: What do you mean?
Player 2: You're coming into your own.
Player 1: You make me sick.